COMSPHERE 3800 SERIES MODEMS MODELS 3810, 3811, AND 3820 USER’S GUIDE Document No.
COMSPHERE 3800 Series Modems COMSPHERE 3800 Series Modems Models 3810, 3811, and 3820 User’s Guide 3810-A2-GB30-20 3rd Edition (November 1996) Changes and enhancements to the product and to the information herein will be documented and issued as a new release. For the 3800 Series standalone modems, the Universal Service Order Code (USOC) for Permissive mode is RJ11C and for Programmable mode is RJ41S or RJ45S.
Safety Instructions Important Safety Instructions 1. Read and follow all warning notices and instructions marked on the product or included in the manual. 2. This product is intended to be used with a three-wire grounding type plug – a plug which has a grounding pin. This is a safety feature. Equipment grounding is vital to ensure safe operation. Do not defeat the purpose of the grounding type plug by modifying the plug or using an adapter.
COMSPHERE 3800 Series Modems Notices WARNING THIS EQUIPMENT HAS BEEN TESTED AND FOUND TO COMPLY WITH THE LIMITS FOR A CLASS A DIGITAL DEVICE, PURSUANT TO PART 15 OF THE FCC RULES. THESE LIMITS ARE DESIGNED TO PROVIDE REASONABLE PROTECTION AGAINST HARMFUL INTERFERENCE WHEN THE EQUIPMENT IS OPERATED IN A COMMERCIAL ENVIRONMENT.
Safety Instructions Government Requirements and Equipment Return Certain governments require that instructions pertaining to modem connection to the public switched telephone network be included in the installation and operation manual. Specific instructions are listed in the following sections. United States Notice to Users of the Public Switched Telephone Network 1. This equipment complies with Part 68 of the FCC rules.
COMSPHERE 3800 Series Modems 8. This equipment cannot be used on public coin service provided by the telephone company. Connection to Party Line Service is subject to state tariffs. (Contact the state public utility commission, public service commission or corporation commission for information.) 9.
Safety Instructions Repairs to certified equipment should be made by an authorized Canadian maintenance facility designated by the supplier. Any repairs or alterations made by the user to this equipment, or equipment malfunctions, may give the telecommunications company cause to request the user to disconnect the equipment.
Table of Contents Preface Objectives and Reader Assumptions . . . . . . . . . . . . . . . . . . . . . . . . . . . vii How to Use This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii Related Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii 1. Introduction Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COMSPHERE 3800 Series Modems 4. DCP Operation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Diagnostic Control Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Diagnostic Control Panel Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . Menu Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents 12. Security Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Security Branch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Security Password Entry Techniques . . . . . . . . . . . . . . . . . . . . . . . . . . . Database Table Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1 12-4 12-11 12-12 13. Fax Operation Overview . . . . . . . . . . . . . . . . . . . .
COMSPHERE 3800 Series Modems List of Figures Figure 2-1 2-2 2-3 3-1 3-2 3-3 4-1 4-2 4-3 4-4 5-1 8-1 8-2 8-3 8-4 8-5 8-6 9-1 9-2 11-1 E-1 iv Page Model 3810 and 3820 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Model 3810 Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Model 3820 Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Model 3811 . .
Table of Contents List of Tables Tables 4-1 4-2 4-3 4-4 4-5 4-6 5-1 9-1 9-2 9-3 9-4 9-5 9-6 9-7 9-8 9-9 12-1 12-2 12-3 12-4 12-5 12-6 12-7 14-1 14-2 B-1 C-1 C-2 C-3 C-4 C-5 C-6 D-1 E-1 E-2 E-3 E-4 F-1 F-2 G-1 3810-A2-GB30-20 Page Model 3810 and Model 3811 DCP LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Model 3820 DCP LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SDCP LEDs . . . . . . . . . . . . . . . . . . . . . . . . . .
Preface Objectives and Reader Assumptions Appendix C provides instructions for performing diagnostic tests when data communications problems occur. This manual describes how to install and operate the COMSPHEREr 3800 Series standalone and carrier-mounted modems. It is assumed that you have a basic understanding of modems and their operation. Appendix D provides technical specifications. Appendix E provides EIA RS-232, EIA RS-366A, and VF TELCO pin assignments. Appendix F provides V.
Introduction Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COMSPHERE 3800 Series Modems • High-speed transmission using asynchronous, synchronous, or UNIX devices over full- or half-duplex dial networks or 2-wire/4-wire leased lines. Features The 3800 Series modems have a wide variety of features. • Dial-Line Modulations: V.32terbo (19,200 and 16,800 bps), CCITT V.32bis (14,400, 12,000, 9600, 7200, and 4800 bps), V.32 (9600 and 4800 bps), V.22bis (2400 bps), V.22 (1200 bps), V.21 (300 bps), Bell 212A, (1200 bps), and Bell 103J (300 bps).
Model 3810 and 3820 Installation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3800 Series Modem Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Customer-Supplied Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Model 3810 or Model 3820 Modem Installation .
COMSPHERE 3800 Series Modems DIAGNOSTIC CONTROL PANEL LCD AND KEYPAD SPEAKER STATUS INDICATORS AC TRANSFORMER EIA-232-D INTERFACE NMS DIAL/LEASED (3820) PHONE/LEASED (3810) AC POWER IN ON/OFF 496-13096-02 Figure 2-1.
Model 3810 and 3820 Installation Customer-Supplied Equipment The following customer-supplied equipment is required to complete a data communications system using either the Model 3810 or Model 3820 modem: • A DTE with an available EIA-232-D serial port. • A standard EIA-232-D male-to-female cable with a male DB-25-S connector at one end to attach to the modem.
COMSPHERE 3800 Series Modems Connecting Model 3810 and Model 3820 Modems with Supplied Cables 1. Make sure the modem’s rear panel power switch is Off. Figure 2-2 and Figure 2-3 show how Model 3810 and Model 3820 modems are connected to certain TELCO jack types using the supplied cables. For other TELCO connections, refer to Appendix E. 2. Connect the DB-25-P (male) connector on the cable to the DB-25-S (female) connector labeled DTE (Figures 2-2 and 2-3) on the modem’s rear panel.
Model 3810 and 3820 Installation To ensure compliance with FCC Part 15 Regulations, a ferrite choke must be installed on the EIA-232-D interface cable. 1. Open the ferrite choke and place it around the DTE cable as close as possible to the connector attached to the modem. 2. Close the two halves around the cable and snap the ferrite choke shut, pressing down on the plastic latch to secure it. 3. Install a cable tie behind the ferrite choke to prevent it from sliding along the cable. Figure 2-3.
COMSPHERE 3800 Series Modems Dial Network Connection The telephone company provides the line termination jacks for the type of service you request. You may choose to operate in either Permissive or Programmable mode. Advance coordination with the telephone company is suggested when connecting the modem to telephone dial lines (PSTN). If you operate in the Permissive mode, the modem’s transmit output level is fixed at approximately –9 dBm.
Model 3810 and 3820 Installation Model 3810 4-Wire/2-Wire Leased-Line Connection Dial Network Management System Connection Use the following procedures to connect a Model 3810 to the leased-line network interface: For Model 3810 and 3820 modems, use the following procedures to connect the modem to the network management system interface: 1. Insert the 8-position, 8-conductor modular plug into the jack labeled PHONE/ LEASED (3810), Figure 2-2. 1.
COMSPHERE 3800 Series Modems Modem Power-Up Once your modem is properly connected to the DTE, dial and/or leased lines, and ac outlet, press the modem’s rear panel power switch to the ON position. The modem begins a power-up self-test. This test takes several seconds to perform, and verifies the operation of most hardware components within the modem. If successful, the LCD displays Power On Selftst Passed and continues to the Top-Level menu screen.
Model 3811 Installation 3 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 Model 3811 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 Removing and Replacing Model 3811 Modems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COMSPHERE 3800 Series Modems EIA-232/V.24 CONNECTOR FACEPLATE Status EIA-232/V.24 EDGE CARD CONNECTOR Pwr EIA232/V.24 Alrm 142 Test Dial 125 REAR CONNECTOR PLATE RI Busy 103 TXD 104 RXD 105 RTS 106 CTS 107 DSR 108 DTR 109 LSD RS-366A/V.25 EDGE CARD CONNECTOR Front Panel V.35 (3600/3500) SQ RS366A/V.25 (3800) Serv RS-366A/V.25 CONNECTOR Spkr 3811 496-13155-02 Figure 3-1.
Model 3811 Installation The installation of a Model 3811 varies slightly if an SDCP is installed on the front of the carrier. To install a Model 3811 modem into the carrier without an SDCP, perform the following steps: 2. At the front of the carrier, hold the modem vertically, with the latch on its faceplate in the open position, and insert it into the top and bottom card guides of one of the slots numbered 1–16 (see Figure 3-2).
COMSPHERE 3800 Series Modems If the modem is to communicate with an installed SDCP, install the modem as described above and perform the following steps: CIRCUIT CARD GUIDE 1. Press the Select key on the SDCP. The cursor appears in the carrier selection entry. 2. Press the F1 (") or F2 (↓) key until the carrier number you want appears on the LCD. CLOSED (LOCKED) The carrier number selection has a range of 1 to 8 since a single SDCP can control a configuration of up to eight carriers.
DCP Operation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Diagnostic Control Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Models 3810 and 3820 Diagnostic Control Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Model 3811 Faceplate and Shared Diagnostic Control Panel . . . . . . . .
COMSPHERE 3800 Series Modems F1 F3 F2 RTS CTS TXD LSD RXD 105 106 103 109 104 SQ COMSPHERE 3820 496-13068-02 Figure 4-1. Model 3810 DCP F1 PWR F3 F2 ALRM DIAG DTR RTS CTS TXD LSD RXD 108 105 106 103 109 104 SQ TEST RATE COMSPHERE 3810 142 496-13067-02 Figure 4-2.
DCP Operation Model 3811 Faceplate and Shared Diagnostic Control Panel The faceplate of the Model 3811 contains LED status indicators that monitor the operation of the modem. After the SDCP is connected to the modem, the Front Panel indicator of the selected modem lights to show that the modem is connected. The SDCP, is used to manage carrier-mounted Model 3811 modems. Use the SDCP to issue commands to, view and select configuration options on, or monitor tests for a specific Model 3811 modem.
COMSPHERE 3800 Series Modems Status Indicators Model 3811’s faceplate, the SDCP, and the SDU faceplate (Figure 4-3). The 3800 Series modems’ status indicators continuously provide information on the modem’s operating condition.
DCP Operation DCP LEDs for the standalone Model 3820 are listed and described in Table 4-2. The SDCP LEDs are listed and described in Table 4-3. Table 4-2 Model 3820 DCP LEDs Label Color Indicates RTS/105 green RTS signal is ON. CTS/106 green CTS signal is ON. TXD/103 green The modem is receiving data from the DTE to transmit. (ON equals space.) LSD/109 green The modem receiver has detected a valid carrier signal and is capable of transferring data to the DTE.
COMSPHERE 3800 Series Modems Hidden Choice Indicators Diagnostic Control Panel Operation The 3800 Series modem’s diagnostic control panel (DCP) is the user interface to all functions used to configure and control the modem. This interface includes the status light-emitting diodes (LEDs), and a two-line, 32-character liquid crystal display (LCD) and keypad (Figure 4-4).
DCP Operation Key The Talk/Data Used to switch the modem between Talk mode (the modem is disconnected from the VF line) and Data mode (the modem is connected to the VF line) when dialing via either the DCP or the attached telephone. (See Chapter 6.) Status Used to monitor the current status of the VF line and DTE interface as well as view the identity of the modem. (See Chapter 7.) Test Used to begin and end various modem tests. (See Chapter 8.
COMSPHERE 3800 Series Modems Top-Level Menu Status and Operational Messages Access to all menu tree branches from the DCP begins at the Top-Level menu, the head of the menu hierarchy. The LCD’s top line identifies the modem status, as listed in Table 4-4, while the bottom line displays the main menu tree branches and operational and dial access security messages, as listed in Table 4-5 and Table 4-6.
DCP Operation Table 4-4 (2 of 3) Top-Level Menu Status Call Failure Messages Indicates Busy Signal The answering modem is busy. Dial Line in Use The modem is already operating on dial networks when another call attempt has been issued. Invalid Number The modem has dialed a telephone number not stored in a directory location. No Answer Tone The answering modem has not answered within the time limit specified by the No Answer Timeout configuration option.
COMSPHERE 3800 Series Modems Table 4-4 (3 of 3) Top-Level Menu Status Dial Backup Messages Indicates Dial Standby The modem is operating in Dial Standby mode. DialBckUp:MR* The modem is operating in a Dial Backup mode at the displayed data rate and is configured for Direct mode. Backup:MR* EC** The modem is operating in Dial Backup mode and is configured for error control and data compression on leased lines.
DCP Operation Messages listed in Table 4-5 are common operational messages that occur during modem operation. These messages normally appear on the second line of the LCD. Table 4-5 Common Operational Messages Common Operational Messages Indicates Please Wait... Appears when a command to a local device takes more than two seconds to complete. Command Sent... Appears when a command is sent to a remote modem.
COMSPHERE 3800 Series Modems Messages listed in Table 4-6 are dial access security messages that can occur when the optional security feature is installed. The Top-Level menu’s main branches appear on the LCD in the order of Call Setup, Talk/ Data, Status, Test, Configure, Control, Security, and Remote. These branches are described in the following chapters.
DCP Operation Selecting Factory Configuration Options key until the appropriate factory 4. Press the preset appears on the LCD, and press the corresponding function key to select your choice. After the modem passes the power-up self-test, configure it for operation using one of the factory preset configurations. 5. Choose Function appears and displays the Edit and Save functions.
COMSPHERE 3800 Series Modems • On initial power-up, the modem is in Command mode. To verify that the modem is connected and functioning properly, enter the following: TYPE: (NOTE: &F1, &F2, and &F4 remove AT command control. The only way to return to AT command control is through the DCP as described earlier in Using the Diagnostic Control Panel (DCP).) AT PRESS: Return (Enter) and The screen displays OK. Where: If the modem does not return OK, refer to Appendix C, Troubleshooting.
DCP Operation Diagnostic Control Panel Security Access To access the Front Panel (DCP) Security Access function, perform the following: NOTE This page of the manual is self-supporting and can be removed to prevent unwanted knowledge of the DCP security access selections. Press the key three times. Press the key twice. Press the key once. Frnt Panl Acces Grant Deny F1 Use the DCP security access function to ‘‘lock” the DCP of any 3800 Series modem and prevent unwanted user access.
Call Setup Branch Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Call Setup Branch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Disconnect . . . . . . . . . . . .
COMSPHERE 3800 Series Modems Call Setup Branch Select Dial to display the first directory telephone number. In the following descriptions, the shaded key indicates what key to press to perform the described operation. Dial Directory: Nxt 01:5551234 To access the Call Setup branch from the Top-Level menu, select Call_Setup: F1 Idle: 19.2 Call_Setup F2 F3 > To view other directory locations, select Nxt.
Call Setup Branch Disconnect Answer Disconnect allows the modem to go on-hook (hang up). Use this function when you want to disconnect an established call on a dial line. Answer allows the modem to go off-hook, generate an answer tone, and begin the handshaking process with the calling modem. Use the Answer function when the Auto-Answer Ring Count configuration option is disabled. (See the Line Dialer section in Chapter 9.
COMSPHERE 3800 Series Modems Dial Standby/Return to Dial The Dial Standby and Return to Dial functions appear on the LCD only after the Model 3810 or Model 3811, operating on leased lines, is placed into dial backup. Once the modem is operating in Dial Backup mode, these functions allow the modem to be switched back and forth between dial and leased-line operation while still maintaining the dial connection. See Figure 5-1.
Call Setup Branch Press the key until Change_Directory is displayed. Press any function key to select Change_Directory. Dial Standby Command Complete F1 F2 01 : 5551234 ← Nxt " F3 If the modem is operating in a Dial Backup mode, the Dial Standby function forces the modem to leased lines and displays the status message Command Complete. Once the modem is in Dial Standby mode, the Return to Dial function appears on the LCD.
COMSPHERE 3800 Series Modems AT Command Equivalent 01 : 9W5556789 z NxtąąąĄ" # F1 F2 The AT command for Change Directory is & Zn=x, where n is the directory location and x is the telephone number. F3 Table 5-1 describes what can be entered in directory locations. To save the number just entered, scroll to the next directory location by selecting Nxt or press the " or # key. The number is now stored in nonvolatile memory.
Talk/Data Branch Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Talk/Data Branch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Manual Dialing when the Remote Modem Is Configured for Auto-Answer . . . . . . . . . . . . . . . . . . . Manual Dialing when the Remote Modem Is Configured for Manual Answer . . . . . . . .
COMSPHERE 3800 Series Modems Manual Dialing when the Remote Modem Is Configured for Auto-Answer If the handshake is successful, the modems are in Data mode and OnLine appears on the LCD. If you are originating a call using a telephone and the remote modem is configured for Auto-Answer, perform the following procedure. Idle : 19.2 Tlk/Data F1 Press the If the remote modem is not a 3800 Series modem, then the remote user must consult that modem’s operator’s manual to perform a similar operation.
Status Branch Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Status Branch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Identity . . . . . . . . . . . . .
COMSPHERE 3800 Series Modems Status Branch SigQual Signal Quality indicates the condition of the VF line. Possible values are Excelent (Excellent), Good, Fair, Poor, or No Signal. These values only appear for V.32bis and V.32 modulations. RevLev Receive Signal Level indicates, in decibels referenced to one milliwatt (dBm), the actual strength of the incoming signal. Sig/Noise Signal-to-Noise Ratio indicates, in decibels, the receive signal strength relative to noise on the line.
Status Branch Identity Identity displays the modem’s serial number, model number, firmware revision level, hardware part number and firmware part number. Retrieval of this information is useful if you are purchasing additional or replacement modems and/or making firmware upgrades. To exit this function and remain in the Status branch, press the key. To exit and return to the Top-Level menu, press the key. AT Command Equivalent The AT command I0 displays the product code, normally 144.
COMSPHERE 3800 Series Modems DTE RS366A DTE displays the state and/or activity of the EIA-232-D interface leads: LSD, DTR, DSR, Tst, TXD, RXD, RTS, and CTS signals are monitored. The interface leads status is updated every 5 seconds. RS366A displays the state and/or activity of the RS366A interface leads: CRQ, DLO, DPR, PND, DSC, and ACR. Typically, RS366A call originate is used in synchronous dial out applications where V.25bis dialing is not supported. This function applies to Model 3811 modems only.
Status Branch Options To access Record from the Status branch, make the following selections: The Options Status function displays all optional firmware features currently installed in the modem (for example, V.29, V.33, and dial network management). If no firmware options are installed, None_Installed appears on the LCD. Status Options F1 To access Options from the Status branch, make the following sections: Press the Status: RS366A F1 F2 F3 key until Record appears. Select Record.
Test Branch Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Test Branch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Abort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Self . . . . . . . . . . . . . . . .
COMSPHERE 3800 Series Modems Test Branch Self To access the Test branch from the Top-Level menu, make the following selections: Self performs an internal self-test of the modem, which takes less than a minute to complete. The modem must be offline (not connected with another modem), otherwise Invalid Command appears. This test is not valid in Remote mode and does not appear on the LCD of either modem when in Remote mode. Idle : 19.
Test Branch Loc Analog Loop Loc Analog Loop performs a local analog loopback (CCITT V.54 Loop 3), Figure 8-1, that verifies modem operation as well as the connection between the DTE and modem. The modem must be offline to perform this test, otherwise Invalid Command appears. To access Loc Analog Loop from the Test branch, make the following selections: The message Started appears on the LCD, and the Test LED (Model 3810 and Model 3811) lights for the duration of the test.
COMSPHERE 3800 Series Modems Rem Digital Loop Rem Digital Loop performs a remote digital loopback (CCITT V.54 Loop 2), Figure 8-2. This test can verify the integrity of the local modem, the communications link, and the remote modem. Any data or pattern entered at the local DTE is sent to and returned from the remote modem. For this test to operate properly, the modems must be online and in Synchronous or Asynchronous Direct mode.
Test Branch Loc Digital Loop The message Started appears on the LCD and the Test LED (Model 3810 and Model 3811) lights. Loc Digital Loop is issued by a local modem and forces it to loopback any data received from the remote modem (Figure 8-3). (This test operates the same as a CCITT V.54 Loop 2 except it is issued at your modem.) This is useful if a remote modem is incapable of initiating a remote digital loopback from its location.
COMSPHERE 3800 Series Modems Pattern Pattern can transmit and receive a 511 bit error rate test pattern. It can also be used with a local analog loopback or a remote digital loopback to simulate data passing through the modem. For this test to operate properly, the modems must be online and in Synchronous or Asynchronous Direct mode. Otherwise, the message Invalid:Bffr Mde appears when this test is started. (See Figures 8-4 through 8-6.) Figure 8-4.
Test Branch Figure 8-6. End-to-End Pattern Test To access Pattern from the Test branch, make the following selections: Test : Pattern F1 The Pattern test can be exited and reentered without restarting the test. The BlksErrd and BlksRcvd continue counting. If the Test Timeout configuration option is enabled, Test Timeout appears at the conclusion of the test. If it is disabled, the test operates until aborted.
Configure Branch Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Configure Branch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Editing and Saving a Configuration Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Summary . . . . . . . . . . . . . . . . . . . . . . . . . .
COMSPHERE 3800 Series Modems Figures 9-1 and 9-2 graphically display the interaction between the edit area and configuration areas as viewed from the perspective of the DCP and the AT command set.
Configure Branch Active (Saved) (ATZ0, ATZ3) Customer 1 (ATZ1) Customer 2 (ATZ2) Factory • Async Dial (AT&F0) • Sync Dial (AT&F1) • Sync Leased Answer (AT&F2) LOAD Active (Operating) USING ATZ OR AT&F COMMAND • UNIX Dial (AT&F3) • Sync Leased Originate (AT&F4) • Cellular (Mobile) (AT&F5) • Cellular (PSTN) (AT&F6) NOTE ON POWER-UP, Active (Saved) IS LOADED TO Active (Operating) Active (Operating) CHANGES MADE USING ANY AT COMMAND IMMEDIATELY AFFECT MODEM OPERATION USE AT&W COMMAND TO SAVE CHANGES TO
COMSPHERE 3800 Series Modems Configure Branch The Configure branch of the Top-Level menu contains all of the modem’s configuration options (straps) which determine how the modem operates. These configuration options are accessed by scrolling down and across various levels of the Configure branch.
Configure Branch The Configure branch consists of the following three levels: Select the Factory configuration area. • Ld EditArea frm. Allows the selection of the Active (Operating), Active (Saved), Customer 1, Customer 2, and Factory configuration areas. • Choose Function. Allows you to make changes (Edit) to existing configuration options or write (Save) these changes to either the Active (Saved), Customer 1, or Customer 2 configuration area.
COMSPHERE 3800 Series Modems Select Nxt until RemAccssPasswrd appears. Sav EditArea to Active (Saved) RemAccssPasswrd NxtąĄ°00000000 F1 F2 F1 F2 > F3 F3 Select a configuration area (Active (Saved), Customer 1, or Customer 2) to save the changes. Select the F2 (°) key to increment password values. Select the key to exit to the Top-Level menu or select the key to remain in the Configure branch. RemAccssPasswrd NxtąĄ°00000000 F1 Press the position.
Configure Branch Configuration Tables DTE Interface The modem’s configuration options are arranged into eight groups based upon functionality: DTE Interface (Table 9-1), DTE Dialer (Table 9-2), Line Dialer (Table 9-3), Dial Line (Table 9-4), Leased Line (Table 9-5), V.42/MNP/Buffer (Table 9-6), Tests (Table 9-7), and Misc (Table 9-8). The DTE Interface configuration options contain EIA-232-D (CCITT V.
COMSPHERE 3800 Series Modems Table 9-1 (1 of 7) DTE Interface Configuration Options Async/Sync Mode: Async Nxt Async Sync Asynchronous/Synchronous Mode. Determines whether the modem operates in Asynchronous mode or Synchronous mode. If the AT command set is enabled and this configuration option is set for Sync, then the modem operates in Async mode when offline. For Async Dial and UNIX Dial, Async is the factory default. For Sync Dial and Sync Leased, Sync is the factory default.
Configure Branch Table 9-1 (2 of 7) DTE Interface Configuration Options Parity Bit: None Nxt None Even Odd Mark Space Parity Bit. Determines type of parity bit. The parity of the DTE must match the parity of the modem. Parity options include None, Even, Odd, Mark, or Space. None – No parity bit is used. This is the default for Async mode. Even – Parity bit is set so that total number of 1’s in data bits plus parity bit is even.
COMSPHERE 3800 Series Modems Table 9-1 (3 of 7) DTE Interface Configuration Options DTR Action: Ignore Nxt Stndrd_RS232 Ignore CntrlsOnHook Off=ReloadStrp Off=CmdMode CntrlsTXMute Data Terminal Ready Action. DTR is a signal from the DTE to the modem indicating that the DTE is connected and ready for operation. Standard RS232 – Allows the DTE to control DTR to the modem as specified in EIA-232-D and CCITT V.24 specifications. If this signal is not present, the modem will not answer or dial.
Configure Branch Table 9-1 (4 of 7) DTE Interface Configuration Options DSR Control (cont’d) Delay to Data – Operation is similar to the Standard RS232 setting except that DSR does not turn ON until the modem enters Data mode. Normally, the modem raises DSR when it begins the handshaking process. Use this setting when the DTE cannot operate with a long DSR-to-CTS delay (common for V.32bis modulation) or when dial access security is enabled and requires a DTE-side password entry.
COMSPHERE 3800 Series Modems Table 9-1 (5 of 7) DTE Interface Configuration Options CTS Control: Forced_On Nxt Forced_On Stndrd_RS232 WinkWhenDisc Follows_DTR Clear-to-Send Control. CTS is a signal from the modem to the DTE indicating that it can accept data from the DTE. NOTE: When CTS flow control or CTS/RTS flow control is enabled, CTS will turn ON and Off regardless of the setting of CTS Control. Forced On – CTS is forced ON at all times. Use this selection for most asynchronous applications.
Configure Branch Table 9-1 (6 of 7) DTE Interface Configuration Options LSD Control: Stndrd_RS232 Nxt Stndrd_RS232 Forced_On BridgeRetrain WinkWhenDisc Follows_DTR Sim_Cntrl_Car =DTR/DiscOff Line Signal Detect Control. LSD is a signal indicating that the carrier signal is being received from the remote modem. It is normally turned Off to the DTE when the power level of the received carrier signal drops below the carrier detect threshold.
COMSPHERE 3800 Series Modems Table 9-1 (7 of 7) DTE Interface Configuration Options CT111_Rate Cntl: Disable Nxt Disable Fallback1 Fallback2 CT111 Rate Control. Allows the DTE to control modem rate via Pin 23 of the EIA-232-D interface. This option determines the effect of the DTE Rate control signal. CT111 is also known as CH on the EIA-232-D interface. Disable – Disregards CT111 Rate Control. Fallback1 – Forces the modem to decrease its configured data rate to the next lower data rate when CT111 is Off.
Configure Branch DTE Dialer Table 9-2 shows each DTE Dialer configuration option as it appears on the LCD, with the Async Dial factory default setting (the default value if the modem is just being installed) shown following the colon (:) on the first line and with all available selections listed on the second line. Following this is a description of the configuration option, a description of the available selections, and any equivalent AT commands.
COMSPHERE 3800 Series Modems Table 9-2 (2 of 5) DTE Dialer Configuration Options *AT Escape Char: 043 ASCI Nxt " 043 ASCI AT Escape Character. The escape sequence (+++) allows you to move back and forth between Command mode and Data mode. The ASCII value of the escape character (43 ASCII) can be set to any ASCII value from 1 ASCII to 255 ASCII. However, the escape character is disabled if a value greater than 127 ASCII is entered. When disabled, the call must be disconnected to return to Command mode.
Configure Branch Table 9-2 (3 of 5) DTE Dialer Configuration Options *Backspace Char: 008 ASCI Nxt ↑ 008 ASCI Backspace Character. Sets the character used to perform a backspace in Command mode. The factory default is 08 (ASCII backspace character). AT command is S-register S5 = n, where n is a value from 0 to 127. *Linefeed Char: 010 ASCI Nxt ↑ 010 ASCI Line Feed Character. Sets the character used to perform a line feed in Command mode for responses from the modem.
COMSPHERE 3800 Series Modems Table 9-2 (4 of 5) DTE Dialer Configuration Options *ResultCode Form: Words Nxt Words Numbers (1) Numbers (2) Result Codes Format. Controls whether or not result codes appear as words or as numeric codes. Some DTEs do not recognize Result Codes as words; therefore, numbers are required. The Numbers (2) format is required for some modem pooling applications. (For a list of result codes, refer to Table B-1 in Appendix B.) The factory default is Words.
Configure Branch Table 9-2 (5 of 5) DTE Dialer Configuration Options V.25b NewLineChr: CR+LF Nxt CR+LF CR LF V.25bis New Line Character. Sets the modem for the command line terminator used by the DTE in V.25bis Async mode. The modem responds to the DTE using the same line terminator. NOTE: This configuration option only appears if DTE Dialer is configured for V25bis Async. The factory default is CR+LF.
COMSPHERE 3800 Series Modems Line Dialer The Line Dialer configuration options establish parameters used by the modem to answer or originate calls. Table 9-3 shows each Line Dialer configuration option as it appears on the LCD, with the Async Dial factory default setting (the default value if the modem is just being installed) shown following the colon (:) on the first line and with all available selections listed on the second line.
Configure Branch Table 9-3 (2 of 6) Line Dialer Configuration Options Blind Dial Paus: 2sec Nxt 2sec 4sec 6sec 8sec 10sec 20sec Blind Dial Pause. Determines how long the modem waits before dialing a telephone number when DialTone Detect is disabled. NOTE: The Blind Dial Pause configuration option only appears when the Dial Tone Detect configuration option is disabled. The factory default is 2sec. AT command is S-register S6 = n, where n is a value from 2 to 255 in 1-second increments.
COMSPHERE 3800 Series Modems Table 9-3 (3 of 6) Line Dialer Configuration Options Fast Disconnect: Disable Nxt Disable Enable Fast Disconnect. Allows the modem to disconnect immediately after receiving a disconnect command from a local DTE or its own diagnostic control panel. Disable – The modem follows its normal disconnect sequence by issuing a cleardown sequence or long space disconnect. This is also known as a graceful disconnect since the other modem receives advance notice of a disconnection.
Configure Branch Table 9-3 (4 of 6) Line Dialer Configuration Options No Carrier Disc: 2sec Nxt 2sec 5sec Disable 10sec 20sec No Carrier Disconnect. If the modem no longer receives carrier from the remote modem, it disconnects the call. This configuration option determines how long carrier is Off before the modem disconnects. Loss of carrier is one method of disconnecting a call. 2, 5, 10, 20 sec – Modem disconnects if carrier turns Off for more than 2 seconds, 5 seconds, 10 seconds, or 20 seconds.
COMSPHERE 3800 Series Modems Table 9-3 (5 of 6) Line Dialer Configuration Options Auto Make Busy: Disable Nxt Disable Enable Automatic Make Busy. Forces the modem to go off-hook under the following conditions: a local analog loopback is performed, a self-test is performed, or if the modem is switched to the service line. This option is only valid with the Model 3811 and does not appear on the Model 3810’s or Model 3820’s LCD.
Configure Branch Table 9-3 (6 of 6) Line Dialer Configuration Options MI/MIC Dialing: Disable End Disable Enable MI/MIC Dialing. Also known as D-Lead signaling, is required by some PBX systems, older data phones, and security callback systems. It forces the modem into the originate handshake after first dialing a call. Disable – Modem ignores activity on the MI/MIC contacts.
COMSPHERE 3800 Series Modems Dial Line The Dial Line configuration options are used to configure the modem for operation over dial lines. Table 9-4 shows each Dial Line configuration option as it appears on the LCD, with the Async Dial factory default setting (the default value if the modem is just being installed) shown following the colon (:) on the first line and with all available selections listed on the second line.
Configure Branch Table 9-4 (2 of 3) Dial Line Configuration Options V32bis Autorate: Enable Nxt Enable Disable StartAt48 StartAt96 Enable – Once connected, the modem automatically lowers the line rate if line conditions become impaired. When line conditions improve, the modem automatically shifts up to the highest data rate the line can support. This autorating only occurs between 14,400 bps and 4800 bps during V.32/V.32bis connections. Disable – Line rate does not vary.
COMSPHERE 3800 Series Modems Table 9-4 (3 of 3) Dial Line Configuration Options V32bis Train: Long Nxt Long Short V.32bis Train. Controls V.32bis and V.32 train. Determines whether minimum or maximum time durations are used during the V.32bis/V.32 handshaking sequence for both dial and 4-wire/2-wire leased line applications. NOTE: This configuration option only appears when the Dial Line Rate configuration option is set for Auto:148-3 or any fixed V.32bis data rate. Long – Selects long train.
Configure Branch Leased Line The Leased Line configuration options are used to configure the modem for operation over leased lines. The Leased Line configuration group only appears if the modem is configured with the Sync Leased factory preset template, or when the &L1, &L2, &L3, or &L4 command is issued.
COMSPHERE 3800 Series Modems Table 9-5 (2 of 5) Leased Line Configuration Options V32bis Autorate: Enable Nxt Enable Disable V.32bis Autorate. Once connected, the modem automatically lowers the line rate if line conditions become impaired. When line conditions improve, the modem automatically shifts up to the highest data rate the line can support. This autorating only occurs between 14,400 bps and 4800 bps during V.32/ V.32bis connections. The factory default is Enable. AT command for V.
Configure Branch Table 9-5 (3 of 5) Leased Line Configuration Options BdLn Auto Orig: Disable Nxt Disable Enable FastBackup 2_min 5_min 10_min Bad Lines Auto Originate. Allows the modem to dial the number stored in directory location 1 to restore communications with the remote modem when the leased lines fail. This configuration option must be enabled in both the local and remote modem. The Answer mode modem must have its Auto-Answer Ring Number configuration option enabled.
COMSPHERE 3800 Series Modems Table 9-5 (4 of 5) Leased Line Configuration Options Rate Auto Orig: Disable Nxt Disable OnFlBkTo48 OnFlBkTo72 OnFlBkTo96 OnFlBkTo120 OnFlBkTo144 OnFlBkTo168 Rate Auto Originate. Initiates a dial backup call, using the phone number in directory location 1, when the leased-line rate of the modem falls back to or below a certain speed. Disable – The modem will not perform a Rate Auto Originate.
Configure Branch Table 9-5 (5 of 5) Leased Line Configuration Options AutoDialStandby: Disable Nxt Disable 15min 30min 1hr 4hr Test(2min) Adv15min Adv30min Adv1hr AdvTest2min Automatic Dial Standby. Permits a modem operating on dial lines (regardless of the method of dialing origination) to check the quality of the leased lines periodically and, if they are good, to disconnect from the dial lines and resume operations on the leased lines. This configuration option is not available on the Model 3820.
COMSPHERE 3800 Series Modems V.42/MNP/Buffer V.42/MNP/Buffer configuration options determine the type of error correction and flow control used by the modems and attached DTEs. Some choices within this group may not appear depending upon how previous configuration options have been selected. If the Async/Sync Mode configuration option is set for synchronous operation (see DTE Interface configuration options group), then the V.42/MNP/Buffer group does not appear on the LCD.
Configure Branch Table 9-6 (2 of 6) V.42/MNP/Buffer Configuration Options *Err Contrl Mode (cont.) Direct Mode – Modem connects at a data rate equal to or less than the initial DTE interface rate. (The modem never connects at a data rate greater than the initial DTE rate.) If the modem connects at a data rate lower than the DTE rate, the DTE must then adjust its data rate to equal the modem rate. Ultimately, the modem speed and DTE speed must be the same.
COMSPHERE 3800 Series Modems Table 9-6 (3 of 6) V.42/MNP/Buffer Configuration Options *EC Negotiat Bfr: Disable Nxt Disable Enable Disab&Switch Error Control Negotiate Buffer. Determines if the answering modem buffers the data that it received from the remote modem during an interval in which the modem attempts to establish a connection using error control. Online changes do not take effect until a disconnect occurs. Disable – Data is not buffered during the link negotiating (handshaking) sequence.
Configure Branch Table 9-6 (4 of 6) V.42/MNP/Buffer Configuration Options *Flw Cntl of Mdm: Disable Nxt Disable XON/XOFF RTS_to_Mdm Flow Control of Modem. Determines how the DTE controls the flow of data from the modem. Disable – The DTE cannot control the flow of data from the modem. XON/XOFF – Method of flow control in which the modem starts and stops data flow based upon XON and XOFF characters received from the DTE.
COMSPHERE 3800 Series Modems Table 9-6 (5 of 6) V.42/MNP/Buffer Configuration Options *Break Buffr Ctl: Keep_Data Nxt Keep_Data Discard_Data Break Buffer Control. Determines if data stored in the modem’s buffer is saved or discarded when the DTE issues a break sequence. Keep Data (Nondestructive mode) – Saves the data in the buffer in both the local and remote modems. Discard Data (Destructive mode) – Empties the data buffer. Only buffers in the same direction of travel as the break are discarded.
Configure Branch Table 9-6 (6 of 6) V.42/MNP/Buffer Configuration Options *RxBuffDiscDelay: Disable Nxt 0sec 60sec Disable Receive Buffer Disconnect Delay. Determines the maximum amount of time the modem can continue to send data in its Receive Buffer to the DTE after the modem is commanded by the DTE to disconnect, or after the modem detects a line disconnect. Through the DCP the available settings are Disable, 10sec, and 60sec; Disable means that the disconnect occurs immediately. The default is Disable.
COMSPHERE 3800 Series Modems Tests The Tests configuration options determine specifics, such as the duration of a test, for the various diagnostic tests available to the modem. Table 9-7 shows each Tests configuration option as it appears on the LCD, with the Async Dial factory default setting (the default value if the modem is just being installed) shown following the colon (:) on the first line and with all available selections listed on the second line.
Configure Branch Table 9-7 (2 of 2) Test Configuration Options V54 Address: Disable Nxt Disable (Address Values) V.54 Address. Determines which remote 3800 Series modem is placed into a remote loopback test. This can be either a remote digital loopback or local analog loopback. This type of addressing can be used for extended data circuits (tail circuits). Disable – This is used for normal point-to-point dial and leased-line networks.
COMSPHERE 3800 Series Modems Misc Table 9-8 shows each Misc (Miscellaneous) configuration option as it appears on the LCD, with the Async Dial factory default setting (the default value if the modem is just being installed) shown following the colon (:) on the first line and with all available selections listed on the second line. Following this is a description of the configuration option, a description of the available selections, and any equivalent AT commands.
Configure Branch Table 9-8 (2 of 4) Miscellaneous Configuration Options Speaker Volume: Medium Nxt Medium Low High Speaker Volume. Controls the level of speaker volume. The factory default is Medium. NOTE: Speaker Volume can also be temporarily set using the Control branch; however, a reset or power cycle will restore the modem to the Speaker Control and Speaker Volume configuration option settings. AT command for Low is L0 or L1. AT command for Medium is L2. AT command for High is L3.
COMSPHERE 3800 Series Modems Table 9-8 (3 of 4) Miscellaneous Configuration Options *NetMngmtAddress: 256 Nxt " 256 Network Management Address. Determines the address used when accessing a locally attached modem from the 6700 Series NMS. This configuration option is ignored by remote modems. Address values range from 001 to 256. The factory default is 256. AT command is S-register S75 = n, where n is a value from 0 to 255 (001 to 256).
Configure Branch Table 9-8 (4 of 4) Miscellaneous Configuration Options *NetworkPosition: Tributary Nxt Tributary Control Network Position Identification. Each modem must be identified either as a control modem or a tributary modem. NOTE: This configuration option is only applicable for leased-line network management applications. For the Model 3810 and Model 3820, Tributary is the factory default. For the Model 3811, Control is the factory default. AT command for Tributary is S74 = 0.
COMSPHERE 3800 Series Modems Security Configuration Options The Security Configuration Options group allows you to view and set dial access security parameters. This group appears only if the dial access security feature has been installed. Table 9-9 shows each Security configuration option as it appears on the LCD. The factory default value is shown after the colon (:) on the first line; all available selections are listed on the second line. After this, a description of the each selection follows.
Configure Branch Table 9-9 (2 of 2) Security Configuration Options *DTE_PW_BkSpChar: 008 Nxt " 008 DTE Password Backspace Character. Sets the character that is used to perform a backspace in security mode. This character can be set to any ASCII value from 0 to 127. The factory default is 08 (ASCII backspace). Get_User_ID: Disable Nxt Disable Enable Get User ID. Determines whether the remote user is prompted for an NMS-defined login ID once the modems have completed initial handshaking.
Control Branch 10 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Control Branch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reset . . . . . . . . . . . . .
COMSPHERE 3800 Series Modems Speaker Reset Speaker allows you to make temporary adjustments to the modem’s speaker volume. Upon a reset, speaker volume returns to its configured setting. For more information on speaker settings, refer to the Misc section in Chapter 9. Reset causes the modem to stop operation and perform a complete program restart. The modem begins the power-up test sequence that ends with the Top-Level menu displayed on the LCD.
Control Branch Make Busy/Remove Make Busy AT Command Equivalent The Make Busy function forces the modem off-hook so it cannot answer a call. This is often used with PBX systems to permit the busy out of a PBX port for rotary or hunt groups. The AT command for Remove Make Busy is H or H0. The AT command for Make Busy is H1.
COMSPHERE 3800 Series Modems AT Command Equivalent To access Download Code from the Control branch, make the following selections: There is no AT Command Equivalent for Service Line. Control : Download_Code DownLoad Code The Download Code function sets parameters within the modem when transferring firmware to a remote modem or when receiving firmware upgrades from a locally attached PC-based controller. The latter should only be performed by customer service personnel.
Control Branch At this point, if you do not want to continue this process, abort the transfer by selecting any function key. This returns the modem to the Top-Level menu. Access Disabled The remote modem’s Access from Remote configuration is disabled. Also is displayed if the local modem has a firmware release prior to Release 3.0 and the remote modem has Release 3.0 or greater installed with either Answer Access Security or Originate Access Security enabled.
COMSPHERE 3800 Series Modems As data banks are transferred, the local and remote LCD’s bottom line displays the status of the download process, and the number of records sent versus the total number of records for that bank. However, a DTE is not required. The download begins without any operator action. When the download begins, the DCP displays download status messages with the data bank number, current block being loaded, and the total number of blocks. There are two data banks.
Remote Branch 11 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1 Remote Branch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2 Overview The Remote branch of the Top-Level menu allows you to control the remote modem’s DCP using the local modem’s DCP.
COMSPHERE 3800 Series Modems Remote Branch Press the Remote. key until Remote appears. Select The following conditions must be met before using the Remote branch: NOTE • A connection using either the dial network or leased lines must be established. If a connection is not established between a local 3800 Series modem and a remote 3800 Series modem, the LCD displays Remote Mode Fail – No Circuit. Press the key to return to the Top-Level menu and dial again.
Remote Branch To return to local modem operation, select ExitRem. Any changes made to configuration options in the remote modem are saved. Online : 19.2 Control ExitRem F1 F2 The following conditions can cause Remote branch access to fail: F3 If the remote modem accepts the password and the entry is successful, the Top-Level menu of the remote modem (Figure 11-1) appears on the local modem’s LCD.
Security 12 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Originate Access Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Answer Access Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VF-Side Passwords . . . . . . . . . . . . . . . . . . . . . .
COMSPHERE 3800 Series Modems Originate Access Security VF-Side Passwords Originate Access lets you control who can originate a call from a local modem via the AT command set. This is useful in LAN and modem pooling applications. With Originate Access security, a local user’s password is embedded in the AT dial command. If the password is valid, the user can dial out using this modem. VF-side password entry occurs between modems prior to connecting.
Security DTE-Side Passwords NOTE DTE-side password entry requires the originating user to supply a valid password via his DTE. This method of password entry occurs after the modems’ training sequence, but before normal connection. The modems must be configured for asynchronous operation to use this type of security. While pulse dial can be used to originate the call, DTMF tones must be used for the password. This can be accomplished by using the P and T modifiers appropriately.
COMSPHERE 3800 Series Modems Security Branch Most of the functions within this branch are protected by an Administrative Password. Once the correct password is entered, these security functions appear on the modem’s LCD. The two major functions that appear under the Security branch are Set Access Control and Reset Security. The Security branch of the Top-Level menu allows you to change and save parameters that are critical to the dial access security password database.
Security Set Access Ctrl Select Set_Access_Ctrl from the Security branch. Set Access Control allows you to change security configuration. This function is protected by an Administrative Password. The Reset Security function allows you to reset the Administrative Password, but results in erasure of the modem’s security database. Admin Password? Entą Ą"00000000 F1 F2 F3 To access Security from the Top-Level menu, make the following selections: The Administrative Password appears.
COMSPHERE 3800 Series Modems EditPasswdTable The Password Table is the modem’s security database. It contains all essential information for each password stored in the modem’s nonvolatile memory. The information associated with each password is known as a record. Records are identified by an index which is a numeric name for a single record. A password’s record is retrieved by entering its index. The Edit Password Table group allows you to view and/or change the modem’s security database table.
Security Table 12-1 Edit Password Table Group Options PsWdType xxxx Nxt Cleared DTE_Entry VF_Entry VF_plus_DTE Password Type. Indicates whether this index location is configured for VF-side password, DTE-side password, or both. Cleared displays for an index location that contains no valid entry. Note that this option only identifies the type of password used. For proper operation, the type of password selected must be consistent with the type of security used.
COMSPHERE 3800 Series Modems Set Answer Sec To access Set_Answer_Sec from Set Access Ctrl, make the following selections: Set Answer Security determines if dial access security is enabled or disabled. This method of inbound security is configured in the answering modem. Although this also appears under the Security Configuration Option group in Chapter 9, it can only be changed from the Set Answer Sec LCD display in the Security branch. Press the key until Set_Answer_Sec appears. Select Set_Answer_Sec.
Security Set Orig Sec To access Set_Orig_Sec from Set Access Ctrl, make the following selections: Set Originate Security controls whether or not the modem can originate a call using AT commands when the dial access security feature is installed. This method of outbound security only applies to modems originating a call. Set Access Ctrl Set_Orig_Sec F1 Press the F2 F3 key until Set_Orig_Sec appears. Select Set_Orig_Sec. Table 12-3 describes the settings of the Set Originate Security group option.
COMSPHERE 3800 Series Modems Set Admin PsWd Reset Security Set Administrative Password is used to change the Administrative Password value. The Administrative Password is an 8-digit decimal number that allows authorized users to enter the Access Security Control function. Reset Security is the second major function within the Security branch of the Top-Level menu. It erases all contents of the security database table and resets all index locations to Cleared.
Security Reset Security Erase_All_PassWd F1 P and T are Pulse dial and Tone (DTMF) dial modifiers. < 5551234 is the phone number. 5551234 is the phone number. F3 F2 W is the second dial tone dial modifiers. To reset security, press appears on the LCD. @ is the wait for quiet answer dial modifiers. until Erase_All_PassWd 12345678 is the password. VF-side passwords must consist of 1–8 decimal digits. Select Erase_All_PassWd.
COMSPHERE 3800 Series Modems Database Table Examples A DTE-side password is entered after the modems have trained, but before a normal connection is established. The following example illustrates how to enter a DTE-side password: TYPE: abc123 PRESS: Enter Where: abc123 is a 10-alphanumeric character password. Characters used for DTE-side passwords are case-insensitive. DTE-side passwords can be from 1 to 6 characters in length.
Security Table 12-6 is an example of a security database table that uses a mixture of VF and DTE passwords. Table 12-5 is an example of a database table with passwords configured for DTE Entry only. This type of password is entered via the originating user’s DTE.
COMSPHERE 3800 Series Modems Table 12-7 is an example of a security database table that uses paired VF and DTE passwords for use in VF_w/_DTE answer security mode.
Fax Operation 13 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1 Fax Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1 Overview • Your modem must be online with a compatible fax modem or fax machine.
COMSPHERE 3800 Series Modems There are no Diagnostic Control Panel (DCP) functions unique to fax operation. If your fax software requires that you change the configuration of your modem, see the appropriate sections of Chapter 9, Configure Branch. The DCP is disabled during fax operation. Your fax software uses AT commands to tell the modem what to do.
14 AT Command Set and S-Registers Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Switching Between Data Mode and Online Command Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Escape Sequence and Escape Guard Time . . . . . . . . .
COMSPHERE 3800 Series Modems Use the O command to return to Data mode from online Command mode. Enter the following command: TYPE: ATO PRESS: Enter Command Guidelines Review the following guidelines before using any AT Commands. • The escape sequence (+++) is used to enter online Command mode from Data mode. • The asynchronous character format for the AT command set must be one of the following: • Commands can be entered one at a time or in strings.
AT Command Set and S-Registers AT Command Format AT commands are entered in Command mode using the following format: TYPE: ATXn Where: X is the AT command and n is the specific value for that command. PRESS: Enter In Table 14-1, the value for X is listed in the AT Command column and the value for n is listed in the Description column. Table 14-1 (1 of 12) 3800 Series AT Commands AT Command Front Panel Branch Description A/ Repeat Last Command Re-executes last command string.
COMSPHERE 3800 Series Modems Table 14-1 (2 of 12) 3800 Series AT Commands AT Command Dn (cont’d) Description Front Panel Branch W or + – Wait for dial tone. Modem waits for a second dial tone before processing the dial string. This can be the initial dial tone or a second tone received when dialing through a tandem PBX (for example, 9+555-6789), or when invoking special features (for example, 70#W555-6789, where 70# disables Call Waiting). R – Reverse Dial mode.
AT Command Set and S-Registers Table 14-1 (3 of 12) 3800 Series AT Commands AT Command Front Panel Branch Description In Identification I0 Displays product code; default is 144. I1 Displays 3-digit firmware revision number. Performs an EPROM check. I2 I3 Displays the modem’s serial number. I4 Displays the modem’s model number. I5 Displays the part number of the circuit card. I6 Displays the firmware release number. I9 Displays 3-digit firmware revision number (same as I1).
COMSPHERE 3800 Series Modems Table 14-1 (4 of 12) 3800 Series AT Commands AT Command Description Front Panel Branch Vn Result Code Format V0 Displays result codes in Number (1) format digits. V1 Displays result codes as text. V2 Displays result codes in Number (2) format (digits).
AT Command Set and S-Registers Table 14-1 (5 of 12) 3800 Series AT Commands AT Command Description Front Panel Branch &Cn LSD Control Configure\Edit\DTE Interface &C0 Forced On. LSD on at all times. &C1 Standard RS232. LSD is on when the remote modem’s carrier signal is detected. LSD is off when carrier signal is not detected. &C2 Wink When Disconnect. LSD normally forced ON, turns Off for approximately one second upon disconnecting. &C2 Wink When Disconnect.
COMSPHERE 3800 Series Modems Table 14-1 (6 of 12) 3800 Series AT Commands AT Command &Fn (cont’d) Description Front Panel Branch If your modem is attached to a cellular telephone, use the &F5 command to configure the modem for cellular communications. &F5 sets the following configuration options: AT Command Value Option Maximum Frame Size \A4 Error Control Mode \N4 Auto-Answer Rings S0 = 3 No Answer Timeout S7 = 120 No Carrier Disconnect S10 = 100 V.32bis Train S43 = 1 V.32bis Autorate S76 = 3 V.
AT Command Set and S-Registers Table 14-1 (7 of 12) 3800 Series AT Commands AT Command &I Description Dial Transmit Level When Dial Transmit Level Type is set to Permissive, &In sets Dial Transmit Level to a value between –10 and –32 dBm. &I99 and &I100 cause the level to be varied automatically according to conditions for Enhanced Throughput Cellular (ETC) operation.
COMSPHERE 3800 Series Modems Table 14-1 (8 of 12) 3800 Series AT Commands AT Command &Mn and &Qn Description Async/Sync Mode and DTE Dialer Type &M0, &Q0 Modem operates in Asynchronous mode and uses AT Command protocol. &M1, &Q1 Modem operates in Synchronous mode and uses AT Command protocol. &M2, &Q2 Modem operates in Synchronous mode and dials telephone number stored in directory location 1 when DTR signal turns Off and then ON. &M3, &Q3 Modem operates in Synchronous mode and uses AT Command protocol.
AT Command Set and S-Registers Table 14-1 (9 of 12) 3800 Series AT Commands AT Command &Tn &Vn Front Panel Branch Description Tests &T0 &T1 &T2 &T3 &T4 &T5 &T6 &T7 &T8 &T9 Test Abort. Stops any test in progress. Local Analog Loop. Pattern. Transmits and receives a 511 Bit Error Rate Test (BERT). Local Digital Loopback test. Enables Receive Remote Loopback Response configuration option. Disables Receive Remote Loopback Response configuration option. Remote Digital Loopback test.
COMSPHERE 3800 Series Modems Table 14-1 (10 of 12) 3800 Series AT Commands AT Command Description \An Maximum Frame Size \A0 64 \A1 128 \A2 192 \A3 256 \A4 32 \A5 16 Configure\Edit\ V42/MNP/ Buffer \Cn Error Control Negotiate Buffer \C0 Disable. \C1 Enable. \C2 Disables and switches modem to Buffer mode. Configure\Edit\ V42/MNP/ Buffer \Dn CTS Control \D0 Forced On. Forces CTS to always ON. \D1 Standard RS232. \D2 Wink When Disconnect. CTS is turned Off for 1 to 2 seconds upon a disconnect.
AT Command Set and S-Registers Table 14-1 (11 of 12) 3800 Series AT Commands AT Command \Qn Description Flow Control of DTE, Flow Control of Modem \Q0 \Q1 \Q2 \Q3 \Q4 \Q5 \Q6 Flow Control of DTE Disable XON/XOFF CTS to DTE CTS to DTE XON/XOFF Disable Disable Front Panel Branch Configure\Edit\ V42/MNP/Buffer Flow Control of Modem Disable XON/XOFF Disable RTS to Mdm Disable XON/XOFF RTS to Mdm \Tn No Data Disconnect Timer \T0 Disable. \Tn Where n is a value from 1 to 255 in 1-minute increments.
COMSPHERE 3800 Series Modems Table 14-1 (12 of 12) 3800 Series AT Commands AT Command Description Front Panel Branch %Bn (cont’d) Modulation and Data Rate can also be set using S-register S41. The following table shows the equivalent values of S41 for each %Bn value, and, where applicable, %Bn in combination with Bn. S41 = 20 %B19200 V.32terbo, 19,200 bps S41 = 21 %B16800 V.32terbo, 16,800 bps S41 = 1 %B14400 V.32bis, 14,400 bps S41 = 2 %B12000 V.32bis, 12,000 bps S41 = 3 %B9600 V.32bis/V.
AT Command Set and S-Registers S-Register List S-Register Format S-registers affect the operating parameters of the 3800 Series modems. S-registers are only applicable when the DTE Dialer Type configuration option is set for AT. (See &Mn command.) S-registers can be displayed and/or modified when the modem is in Command mode. To display the value of an S-register, issue the following command: Table 14-2 lists all S-registers supported by the 3800 Series modems. The first column lists the S-register.
COMSPHERE 3800 Series Modems Table 14-2 (1 of 11) 3800 Series S-Registers S-Register Description S0 Auto-Answer Ring Number Register determines number of rings the modem will count before automatically answering a call. Enter zero (0) if you do not want the modem to automatically answer any calls. Otherwise, enter a value from 1 to 255 for the number of rings to count before answering. Factory setting is 1.
AT Command Set and S-Registers Table 14-2 (2 of 11) 3800 Series S-Registers S-Register Description Front Panel Branch S8 ‘‘,” Pause Time for the Dial Modifier Register determines how long (in seconds) the modem pauses when it encounters a comma (,) in the Dial command string. Enter a value from 0 to 255 seconds. Factory setting is 2 seconds.
COMSPHERE 3800 Series Modems Table 14-2 (3 of 11) 3800 Series S-Registers S-Register 14-18 Description Front Panel Branch S35 Auto Redial (Leased Line) Auto Redial allows repeated automatic dial backup attempts by specifying the range of Directory Locations that can be tried. A redial attempt is made in response to a bad phone number, a busy signal, no answer, or no quiet answer. The modem must be in Originate mode.
AT Command Set and S-Registers Table 14-2 (4 of 11) 3800 Series S-Registers S-Register Description Front Panel Branch S38 DTR Cont Repeat Determines whether automatic dialing of dial backup directory locations will be repeated continuously, or halted after the first pass. Regardless of the setting of S38, dialing is locked out after ten failed attempts to connect to the same number. Register has the following values: 0 = Disable 1 = Enable Factory setting is Disable.
COMSPHERE 3800 Series Modems Table 14-2 (5 of 11) 3800 Series S-Registers S-Register 14-20 Description Front Panel Branch S43 V.32bis Train Register controls the modem’s train time for V.32bis/V.32 mode. Register has the following values: 0 = Long 1 = Short Factory setting is Long. Configure\Edit\Dial Line S44 Leased-Line Rate Register determines the modem’s data rate and modulation scheme for operation on either 2-wire or 4-wire leased lines in either Answer or Originate mode.
AT Command Set and S-Registers Table 14-2 (6 of 11) 3800 Series S-Registers S-Register Description Front Panel Branch S47 Auto Dial Standby Register determines if the modem performs an automatic dial standby if in Dial Backup mode. Register has the following values: 0 = Disable 1 = 15 minutes 2 = 1 hour 3 = 4 hours 255 = Test(2min) Factory setting is Disable.
COMSPHERE 3800 Series Modems Table 14-2 (7 of 11) 3800 Series S-Registers S-Register Description Front Panel Branch S53 V.54 Address Identifies the address of the modem to be placed in a loopback test. Register has the following values: 0 = Disable 1–34 = Modem address Factory setting is Disable. Configure\Edit\Tests S54 V.54 Device Type Identifies where the modem is physically located in the network. Register has the following values: 0 = Peripheral 1 = Intermediate Factory setting is Peripheral.
AT Command Set and S-Registers Table 14-2 (8 of 11) 3800 Series S-Registers S-Register S62 Description V.25bis Coding Register identifies to the modem the type of coding used by the DTE while in V.25bis mode. Register has the following values: 0 = ASCII 1 = EBCDIC Front Panel Branch Configure\Edit\DTE Dialer Factory setting is ASCII. S63 V.25bis Idle Character Register identifies to the modem the type of idle fill used by the DTE while in V.25bis mode.
COMSPHERE 3800 Series Modems Table 14-2 (9 of 11) 3800 Series S-Registers S-Register S69 Description Front Panel Branch Make Busy Via DTR Configure\Edit\Line Dialer Register determines if the modem goes off-hook (busy) when DTR is Off. Register has the following values: 0 = Disable 1 = Enable Factory setting is Disable. S74 Network Position Identification Register identifies each modem as either a control or tributary modem.
AT Command Set and S-Registers Table 14-2 (10 of 11) 3800 Series S-Registers S-Register Description S80 No Data Disconnect Trigger Signal Register determines whether Pin 2 (transmit data) or Pin 3 (receive data) of the modem’s RS-232 serial interface is monitored so that the modem can disconnect the call if there is no activity for a certain period. (See the \T command.
COMSPHERE 3800 Series Modems Table 14-2 (11 of 11) 3800 Series S-Registers S-Register S88 Description Straps When Disconnected Register determines whether the Active(Operating) area is reloaded upon a disconnect. Register has the following values: 0 (or 231) = No Change 1 (or 232) = Reload 2 (or 233) = Reload with no AT Change Front Panel Branch Configure\Edit\V.42/MNP/ Buffer Factory setting is No Change. S89 V.42 ARQ Window Size Increase Register allows the V.
Menu Tree A Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1 Overview The following pages provide graphic representations of the general menu structure of the front panel or SDCP displays. The model, installed features, and configuration options all may affect what is actually displayed at each level of the menus.
COMSPHERE 3800 Series Modems Displays current status of modem along with data rate and error control mode. “Status” to next page Call_Setup Dial Tlk/Data Answer Disconnect Status Test Change_Directory Dial_Standby or Return_to_Dial VF Identity DTE Ser# Mod # FRev HPt# FPt# LSD DTR DSR Tst TXD RXD RTS CTS RS366A Record Options Directory Locations 1 – 10 Does not appear in Remote Mode. (Rem_Digital_Loop, Loc_Digital_Loop, and Pattern appear if the secondary channel is used.
Menu Tree from previous page to next page Configure Ld EditArea frm: Activ (Operating) Customer2 Factory Customer1 Active (Saved) Async_Dial Sync_Leased Sync_Dial Cellular (Mobile) UNIX_Dial Cellular (PSTN) Choose Mode Answer Originate Choose Function Edit Save Active (Saved) Customer1 Customer2 from previous page Leased_Line Leased Mode LeasedLine Rate 19200(V32t) 16800(V32t) 14400(V32b) 12000(V32b) 9600(V32b) 7200(V32b) 4800(V32b) 2400(V22bis) V32bis Autorate Leased TX Level 1800HzT
COMSPHERE 3800 Series Modems from previous page Control Remote Secondary Security ★ Prim (data blckd) (ExitRem appears instead of Remote when using Remote Mode) Set_Access_Ctrl Reset_Security (Admin Password?) EditPassWdTable Set_Orig_Secur Set_Answer_Sec Speaker Make_Busy or RemoveMakeBusy Reset Set_Admin_PsWd Download Code Service_Line or DiscServLine ★ Only appears if optional dial access security feature is installed.
Result Codes B Table B-1 (1 of 2) Result Codes Numbers (1) Numbers (2) Word Description 0 0 OK Command executed 1 1 CONNECT Modem connected to line 2 2 RING Modem receiving a ring voltage from the VF line 3 3 NO CARRIER Modem lost or does not detect carrier signal, or does not detect answer tone 4 4 ERROR Invalid command 5 5 CONNECT 1200* Connection at 1200 bps 6 6 NO DIALTONE* No dial tone detected 7 7 BUSY* Busy or trunk busy signal detected 8 8 NO ANSWER* No ‘‘qui
COMSPHERE 3800 Series Modems Table B-1 (2 of 2) Result Codes Numbers (1) Numbers (2) Word Description 21 11 CONNECT 4800/ EC*** Connection at 4800 bps with error control 22 12 CONNECT 4800/ EC*** Connection at 4800 bps with error control 23 16 CONNECT 12000/ EC*** Connection at 12,000 bps with error control 24 13 CONNECT 14400/ EC*** Connection at 14,400 bps with error control 25 17 CONNECT 16800/ EC*** Connection at 16,800 bps with error control 26 15 CONNECT 7200/ EC*** Connect
Troubleshooting C Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1 Overview This appendix points out basic problems that can occur when operating a 3800 Series modem. Use Tables C-1 through C-6 to check out these problems.
COMSPHERE 3800 Series Modems Table C-2 Modem – DTE Connection Symptom Action Modem does not accept or echo back AT commands Verify that the cable between the Async port of the DTE and the modem is a standard RS-232 cable. If the cable is bad, replace it. (Null modem cables, also known as crossover cables, do not work in this application.) Verify that the Command Echo Character configuration option is enabled. Refer to Line Dialer in Chapter 9, Configure Branch, or ATE command.
Troubleshooting Table C-3 (2 of 2) Modem – VF Connection Symptom Action Originate Mode Verify that the modem’s DTE Dialer configuration option is set to the correct setting: either AT, DTR Dialing, V.25bis Async, V.25bis Bisync, or V.25bis HDLC. Modem does not go off-hook and begin dialing If using AT Dialing, refer to the Table C-2, Modem – DTE Connection.
COMSPHERE 3800 Series Modems Table C-4 Online Operation Action Symptom Data scrambled Verify that the character format (data bits, parity, and stop bits) is set to the same value in both modems. Missing data during a transfer Verify that you are using the same method of flow control for both the modem and the DTE. If using XON/XOFF flow control, verify that the modem’s parity matches the DTE’s parity.
Technical Specifications D Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1 Technical Specifications Table D-1 shows the technical specifications for the 3800 Series modems. Table D-1 (1 of 4) Technical Specifications for 3800 Series Modems Specifications Description APPROVALS (115 Vac, 60 Hz only) FCC Part 15 Class A FCC Part 68 Registration Number: (See label on modem.
COMSPHERE 3800 Series Modems Table D-1 (2 of 4) Technical Specifications for 3800 Series Modems Specifications COMPATIBILITY Description DIAL-LINE MODULATIONS V.32terbo (19,200, 16,800 bps) CCITT V.32bis (14,400, 12,000, 9600, 7200, 4800 bps) CCITT V.32 9600, 4800 bps) CCITT V.22bis (2400 bps) CCITT V.22 (1200 bps) CCITT V.21 (300 bps) Bell 212A (1200 bps) Bell 103J (300 bps) LEASED-LINE MODULATIONS V.32terbo (19,200, 16,800 bps) CCITT V.32bis (14,400, 12,000, 9600, 7200, 4800 bps) CCITT V.
Technical Specifications Table D-1 (3 of 4) Technical Specifications for 3800 Series Modems Specifications Description DIMENSIONS Weight 2.5 pounds (1.14 kg) Model 3810 and Model 3820 (not including power transformer) 1.0 pounds (0.45 kg) Model 3811 Height 2.1 inches (5.4 cm) Model 3810 and Model 3820 7.1 inches (18.1 cm) Model 3811 Width 7.6 inches (19.4 cm) Model 3810 and Model 3820 0.9 inches (2.3 cm) Model 3811 Depth 12.1 inches (30.8 cm) Model 3810 and Model 3820 13.4 inches (34.
COMSPHERE 3800 Series Modems Table D-1 (4 of 4) Technical Specifications for 3800 Series Modems Specifications Description LEASED-LINE CONNECTIVITY Model 3810 JM8 Model 3820 6-pin center pair leased jack (Requires 125-0054-1531 for JM8 connection) Model 3811 50-pin mass termination VOICE FREQUENCY LINE REQUIREMENTS 2-wire dial (PSTN) or 4-wire/2-wire leased line DATA RATES Dial Line 19,200, 16,800, 14,400, 12,000, 9600, 7200, 4800, 2400, 1200, or 300–0 bps Leased Line 19,200, 16,800, 14,400, 1
Pin Assignments Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EIA-232-D Pin Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EIA RS-366-A Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VF Connector Pin Assignments . . . . . . . . . . . . . .
COMSPHERE 3800 Series Modems Table E-1 EIA-232-D Pin Assignments RS-232 Pin Name EIA Circuit CCITT Signal Source 1 — AA 101 — 2 TXD BA 103 DTE Transmit Data 3 RXD BB 104 DCE Receive Data 4 RTS CA 105 DTE Request-to-Send 5 CTS CB 106 DCE Clear-to-Send 6 DSR CC 107 DCE Data Set Ready 7 SG AB 102 — 8 LSD CF 109 DCE 9 +10V — — — Reserved for test purposes (may be used to drive one RS-232 load) 10 –10V — — — Reserved for test purposes (may be used to
Pin Assignments EIA RS-366-A Pin Assignments Table E-2 lists the EIA-366-A pin assignments for the modem.
COMSPHERE 3800 Series Modems VF Connector Pin Assignments Tables E-3 and E-4 list the connector pin assignments for Model 3810 and Model 3820 modular jacks and the pin assignments for the TELCO jacks.
Pin Assignments Table E-3 VF Connector Pin Assignments: Models 3810 and 3820 Pin 3810 Phone/Leased Connector (J6) 1 4-Wire Transmit Leased Line/ 2-Wire Leased Line 2 4-Wire Transmit Leased Line/ 2-Wire Leased Line 3 3810 Dial Connector (J7) 3820 Phone Connector Mode Indication 3820 Dial/Leased Connector Mode Indication 4 Phone-Ring Dial-Ring Phone-Ring 2-Wire Leased Line/Dial-Ring 5 Phone-Tip Dial-Tip Phone-Tip 2-Wire Leased Line/Dial-Tip 6 Mode Indication Common Mode Indication Com
CCITT V.25bis Dialing Commands and Response Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Call Request Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Call Request with Number Provided (CRN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COMSPHERE 3800 Series Modems Call Request Commands Call Response Call Request commands are issued from the DTE to the modem and are responsible for initiating any dial calls. Call Request commands include Call Request with Number Provided (CRN) and Call Request with Stored Memory Address Provided (CRS). A Call Response indicates if the command was accepted by the modem. Call Response includes Call Failure Indication (CFI) and Call Connecting (CNX).
CCITT V.25bis Dialing Commands and Response Call Answer Commands Program Normal (PRN) Call Answer commands disable or enable the modem’s AutoAnswer function. These commands are issued from the DTE. Call Answer commands include Incoming Call (INC), Disregard Incoming Call (DIC) and Connect Incoming Call (CIC). The Program Normal (PRN) command allows the DTE to enter and store a telephone number to a specific directory location. PRN is similar to the AT&Z command.
COMSPHERE 3800 Series Modems Command Response The INV response format is: INVxx A Command Response indicates that the command entered was a valid or invalid entry. Command Response includes Valid (VAL) and Invalid (INV). Where: xx is CU MS PS PV Valid (VAL) The VAL response indicates that the modem has accepted the V.25bis command issued by the DTE. VAL is similar to the AT result code OK. command unknown message syntax error parameter syntax error parameter value error Table F-1 lists V.
CCITT V.25bis Dialing Commands and Response Table F-2 lists V.25bis response messages supported by the 3800 Series modems. Table F-2 V.25bis Response Messages AT Command/ Result Code Equivalent Description V.
Default Configuration Options G Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G-1 Overview Table G-1 in this appendix lists all default configuration options for the four factory preset configurations. An N/A indicates that the value for this configuration option does not appear on the LCD if that factory default configuration is selected.
COMSPHERE 3800 Series Modems Table G-1 (2 of 4) Factory Default Configuration Options Configuration Option DTE DIALER DTE Dialer Type AT Escape Character Escape Guard Time Break Forces Escape Command Character Echo Carriage Return Character Backspace Character Linefeed Character Result Codes Extended Result Codes Result Codes Format AT Command Mode V.25bis Coding V.25bis Idle Fill V.
Default Configuration Options Table G-1 (3 of 4) Factory Default Configuration Options Configuration Option DIAL LINE Dial Line Rate V.32bis Automode V.32bis Autorate Dial Transmit Level Async Dial and UNIX Dial Default Settings Sync Dial Default Settings Sync Leased Answer/Originate Mode Default Settings V.22bis Guard Tone V.
COMSPHERE 3800 Series Modems Table G-1 (4 of 4) Factory Default Configuration Options Configuration Option TESTS DTE RL (CT140) DTE LL (CT141) Test Timeout Receive Remote Loopback V.54 Address V.
Equipment List Equipment Feature/Part Number Model 3810 (115V) 3810-A1-001 Model 3810 (220–240V) 3810-A1-301 Model 3811 3811-B1-001 Model 3820 (115V) 3820-A1-001 Model 3820 (220–240V) 3820-A1-301 Fax Option 3800-C1-008 6-position, 4-wire modular cord, 7-foot length 125-0067-0031 8-position, 8-wire modular cord, 14-foot length 125-0053-1431 8-position to 6-position (JM8 to RJ11) crossover modular cord 125-0054-1531 3810-A2-GB30-20 H November 1996 H-1
Glossary Active (Operating) A configuration area containing configuration options currently in use by the modem. When a power cycle occurs, a reset is performed, or a save is issued using the DCP, this area is updated with the contents of Active (Saved). Active (Saved) A nonvolatile configuration area containing the most recently saved configuration options. Any changes made to configuration options can be saved using either the DCP’s Save command or by issuing an AT&W0 command.
COMSPHERE 3800 Series Modems automatic dial backup When leased-line operation fails, this function forces the modem to dial the telephone number stored in directory location 1; communication over the dial network continues with the remote modem. For a 3800 Series modem to perform this properly, the telephone number in directory location 1 must be the telephone number at the remote site.
Glossary CCITT V.17 A fax communications standard for modems operating half-duplex with synchronous data at 14,400 bps. CCITT V.22 A standard for modems operating full-duplex with asynchronous or synchronous data at 1200 bps over the dial network (PSTN). CCITT V.22bis A standard for modems operating full-duplex with asynchronous or synchronous data at 1200 or 2400 bps over the dial network (PSTN). CCITT V.
COMSPHERE 3800 Series Modems Configure Top-Level menu branch that contains all the modem’s configuration options. connector An outlet on equipment and cables that provides a connection. CSA Canadian Standards Association. CTS Clear-to-Send. A signal indicating that the modem is ready for the DTE to transmit data. Customer 1 A user-defined configuration area containing customized configuration options for a specific application.
Glossary digital signal A signal composed of only two discrete values, representing the binary digits 0 and 1. directory location Nonvolatile memory that stores up to ten telephone numbers. Each directory location can have up to 40 characters entered. DOC Canadian Department of Communication. download A process that transfers modem firmware from a locally attached PC to a modem or allows the cloning of firmware from a local modem to a remote modem.
COMSPHERE 3800 Series Modems Group III A fax standard that specifies a rate of transmission of about one page per minute. half-duplex Two-way data communications allowed in only one direction at a time. handshaking The exchange of predetermined codes and signals (tones) to establish a connection between two modems. HDLC High-Level Data Link Control. A communications protocol defined by ISO.
Glossary modem (Modulator/DEModulator). A device that transforms signals from digital to analog form and vice versa. modulation The process of varying some characteristics (usually amplitude, frequency, and/or phase) of a carrier wave to form data transmissions. network A communications circuit. network address The customer-assigned diagnostic address of a tributary modem. NIM Network Interface Module.
COMSPHERE 3800 Series Modems register A part of the modem’s memory that contains values that determine the modem’s operating characteristics. Remote A branch of the Top-Level menu that permits access to the DCP of another modem. remote loopback A test that sends a signal to the remote modem to test the local modem, the remote modem, and the circuit between them. remote mode indicator An inverse video that indicates the modems are operating in Remote mode.
Glossary synchronous transmission Data transmission that is synchronized by timing signals. Characters are sent at a fixed rate. This type of transmission is more efficient than asynchronous transmission. tone dialing One of two dialing methods, in which telephone numbers are sent as tones across the telephone lines. Top-Level menu The very top of the menu tree that displays modem status and all Top-Level menu branches.
Index A A/ (Repeat Last Command), 14-3 Abort (Test branch), 8-2 ac power connection, 2-7 requirements, D-2 Access from Remote, 9-43 Access From Remote (S55), 14-22 Active (Operating) configuration area, 9-1 Active (Saved) configuration area, 9-1 Administrative Password, 12-5, 12-10 Answer, 5-3 Answer Access security, 12-2 Answer Access Security Mode, 9-47 Answer Security, 12-8 ARQ Window Size Increase, 14-26 Async Mode (&M, &Q), 14-10 AT Command Mode, 9-18 AT Command Mode (S84), 14-25 AT commands IH (V.
COMSPHERE 3800 Series Modems Automatic Make Busy, 9-24 automatic redialing, 9-19, 9-24, 9-32, 14-19 AutoSync, 14-10 selecting, 4-13 Tests, 9-40 V.
Index Directory Location 1 Callback (S67), 14-23 disabled commands, 9-42 Disconnect, 5-3 display, revision, serial, model numbers, 14-5 Download Code, 10-4 download failure, 10-6 download latest firmware, 10-6 DSR Control, 9-10, 9-11 DSR Control (&S), 14-10 DTE connection, 2-4 DTE Dialer Type, 9-15 DTE Dialer Type (&M, &Q), 14-10 DTE Interface, 9-7 DTE LL (S52), 14-21 DTE Local Loopback, 9-40 DTE Rate, 9-8 same as VF rate, 14-26 DTE Rate=VF Rate, 9-14 DTE Rate=VF Rate (S90), 14-26 DTE Remote Loopback, 9-40
COMSPHERE 3800 Series Modems No Data Disconnect, 9-23 No Data Disconnect Timer (\T), 14-13 No Data Disconnect Trigger Signal, 9-23 No Data Disconnect Trigger Signal (S80), 14-25 Nxt (DCP option), 9-6 L LCD display, 4-6 LdEditAreafrm, 9-5 Leased Line Carrier On Level (S48), 14-21 Leased Line mode, 14-9 Leased Line Rate, 9-29, 14-20 Leased Line Transmit Level, 9-30 Leased Mode, 9-29 Leased TX Level (S45), 14-20 leased-line connection, 2-7 LEDs, 4-4 Line Current Disconnect, 9-22 Line Current Disconnect (S65)
Index Repeat Last Command (A/), 14-3 replacing modems, 2-8, 3-4 Reset, 10-2 Reset and Load Active (Z), 14-6 Reset Security, 12-10 Result Codes Enable/Disable, 9-17 enable/disable, 14-5 extended, 14-6 format, 14-6 list, B-1 Result Codes Format, 9-18 rings before answer, 14-16 RS366A status, 7-4 RTS Action, 9-11, 14-10 RTS/CTS Delay, 9-12, 9-13 RTS/CTS Delay (S26), 14-17 S S-registers, 14-15 change, 14-5 display, 14-5 format, 14-15 S0 (Auto-Answer Ring Number), 9-20, 14-16 S2 (AT Escape Character), 9-16, 14
COMSPHERE 3800 Series Modems T W Talk mode, 6-2 Talk/Data branch, 6-1 technical specifications, D-1 telephone connection, 2-7 telephone numbers, entering, 5-5 Test branch, 8-2 Test Timeout, 9-40 Test Timeout (S18), 14-17 Tests (&T), 14-11 top-level menu, 4-8 Transmit Buffer Disconnect Delay, 9-38 Transmit Buffer Disconnect Delay (S49), 14-21 Transmit Clock Source, 9-13 Transmit Clock Source (&X), 14-11 transmit level, D-3 troubleshooting, C-1 window size, 14-26 X XON/XOFF flow control (\X), 14-13 XON/XO
