Zypcom Data/Fax/Voice Modems User’s Guide Z34-SC Z34-PC Part number: 18008-509D November 1997
Z Copyright 1997 by Zypcom, Inc. Document No. 18008-509D November 1997 This manual is published by Zypcom, Inc. who reserves the right to make changes and improvements in the product(s) at any time. Zypcom also reserves the right to revise this manual at any time and without notice. All rights reserved.
Z Contents Chapter 1 Introduction Description .............................................................. 1-1 Features .................................................................. 1-2 System Requirements .............................................. 1-3 Modes of Operation .................................................. 1-3 Modem Interface ...................................................... 1-7 Check List ................................................................
Z Chapter 3 AT Commands Introduction ............................................................. 3-1 Functional Modem States ......................................... 3-2 Basics of the AT Command Set ................................. 3-4 AT Command Summary ........................................... 3-6 AT Command Descriptions ....................................... 3-7 AT Commands for Data Mode ................................... 3-9 Error Control and Compression Commands ...........
Z About This Manual Shown below is a chronological listing of revisions to this manual. The revision sequence, date, and synopsis of revised materials are included to provide the reader with a comprehensive manual history. REVISION NUMBER 18008-507A 18008-509A 18008-509B 18008-509C 18008-509D DATE 01/97 04/97 04/97 05/97 11/97 DESCRIPTION 1st Edition 2nd Edition 3rd Edition 4th Edition 5th Edition Zypcom welcomes your comments concerning this manual.
Z Warranty and Limitation of Liability Zypcom, Inc. warrants that its products will perform in accordance with Zypcom’s published specifications (or the specification agreed to, in writing, by the Buyer and Zypcom, and made a part of the sales contract) for a period of twenty-four (24) months from the date of original shipment. During this warranty period, Zypcom will repair any equipment that it determines is defective.
Z THE BUYER AND ZYPCOM AGREE THAT THE SOLE AND EXCLUSIVE REMEDIES FOR BREACH OF ANY WARRANTY CONCERNING THE GOODS SHALL BE REPAIR OR REPLACEMENT OF DEFECTIVE PARTS UPON THE TERMS ABOVE DESCRIBED OR, AT ZYPCOM’S OPTION, REFUND OF THE PURCHASE PRICE. ZYPCOM SHALL NOT BE LIABLE FOR CONTINGENT OR CONSEQUENTIAL DAMAGES TO PERSONS OR PROPERTY, AND ITS SOLE LIABILITY IS AS SET FORTH ABOVE.
Z Service Information In the event of malfunction or other indication of product failure, please follow this procedure: 1. Call Zypcom Technical Support at (510) 783-2501, Monday through Friday from 8:00 A.M. to 5:00 P.M. Pacific time (excluding holidays). 2. Your support representative will ask you to perform a few easy tests. If the tests and other remedies do not solve the problem, you will be issued a Repair Order (RO) number. 3.
Z For non-warranty repairs, charges vary according to the specific model of the modem being repaired. Repair charges are estimated before an RO number is issued. Customer prepays all freight and repair charges by means of credit card or C.O.D. terms. Zypcom can accept prepayment by company check. FCC Part 15: Radio/Television Interference This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
Z CAUTION: Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. CAUTION: Shielded interface cables, if any, must be used in order to comply with emissions limits. Part 68: Telephone Connection This equipment complies with Part 68 of the FCC rules. This equipment has a label that contains, among other things, the FCC Registration Number and Ringer Equivalence Number (REN).
Z Your telephone company may make changes in its facilities, equipment, operations or procedures that would affect the proper functioning of your equipment. If they do, you will be notified in advance to give you an opportunity to maintain uninterrupted telephone service. If you experience trouble with this equipment, please contact Zypcom technical support.
Z Canadian Department of Communications— Requirements For End Users The Canadian Department of Communications label identifies certified equipment. This certification means that the equipment meets certain telecommunications network requirements. The Department does not guarantee the equipment will operate to the user’s satisfaction. Before installing this equipment, the user should ensure that connection to the line is allowed by the local telecommunications company.
Z The Load Number (LN) assigned to each terminal device indicates the total load percentage that can be connected to a telephone loop. The termination on a loop may consist of any combination of devices. However, the total LN of all the devices must not exceed 100. The Load Number and Canadian certification number are listed on the modem label. The Canadian DOC connector codes supported are CA11A, CA41A, and CA45A.
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CHAPTER 1 Introduction Description T he Zypcom Z34-SC and Z34-PC modems are versatile desktop communication devices. These devices have high-speed data transfer (56Kbps) and send/receive facsimile transmission capabilities, as well as a variety of important voice and video communication features. The Z34-SC and Z34PC (C-Series) modems operate full-duplex (data and voice) on dial-up lines.
1 Features q V.34+ 33,600bps asynchronous data modem with throughput up to 115.2Kbps q q q q 56000 bps using USR x2 technology* q q q q q q q q q Hayes AT auto-dialing V.42 and MNP 2-4 error correction V.42bis and MNP 5 data compression Fax Group 3 compatibility, V.17 at 14.4Kbps and V.29 at 9.6Kbps, fax software Class 1 EIA/TIA IS-101 compatible voice commands Answer machine and voice mail Full-duplex speakerphone Audio recording and playback of messages Flash memory for modem upgrades V.
1 System Requirements Z34-SC Requires q PC with a free COM port 1, 2, 3, or 4 q 3.5” floppy drive q Hard disk drive with 5MB free space Z34-PC Requires q q q q q PC with a free 16-bit ISA slot 3.5” floppy drive Hard disk drive with 5MB free space Free COM port address: 1, 2, 3, or 4 Free IRQ for the COM port: 3, 4, 5, 7, 10, 11, or 12 q Speaker or earphone set (optional) Modes of Operation The Zypcom C-Series modems incorporate the CLMD3452 DSP chipset from Cirrus Logic.
1 Data Mode In data mode, the modem can operate at a line speed of up to 56,000 bps. These modems will automatically downshift during the initial handshake to communicate with lower-speed modems. The C-Series modems support the following modem standards: ITU-T: V.34+, V.34, V.32bis, V.32, V.22bis, V.22, V.21 USR: x2 56Kbps technology Bell: 212A, 103 The C-Series modems implement a Hayes compatible AT command set in data mode.
1 Fax mode In fax mode, the modem operates at up to 14,400 bps (transmit and receive), and implements all the data rates and modulation schemes for standards V.17, V.29, V.27ter, and V.21 channel 2. The C-Series modems implement a standard Class 1 fax command set, compatible with any communication application software that also supports EIA/TIA-578 Fax Class 1. However, users never have to use the EIA/TIA-578 commands to control fax operation, since this is the sole responsibility of the fax software.
1 On the Z34-SC modem, everything that is required to operate the modem in this mode of operation is provided (MIC, speaker, software and modem). With the Z34-PC modem, optional speakers are needed for speakerphone operation. To use the speakers attached to your soundcard, jumper the modem's speaker jack (sound-out) to the soundcard's input jack (sound-in) with a standard (male-to-male) phono plug cable.
1 Modem Interface Plug and Play Host Interface The Z34-PC supports both PC 16-bit Plug-and-Play and Non-Plug-and-Play ISA Bus applications. You may use jumpers to set up the COM port base address and IRQ interrupt for non-Plug-and-Play applications, or use the Plug-and-Play feature to let the included driver disc PNP software select the COM port address and interrupt for the modem. Speaker Interface The Z34-SC modem has an internal high quality audio speaker and does not require external speakers.
1 Microphone Interface The modem provides a microphone interface that connects a microphone to the modem. On the Z34-SC, it is built-in on the front left, bottom. On the Z34-PC, it is included and attached via a phono jack. This microphone input can then be used for record messages (for the answer machine feature) or for speakerphone operation. Videophone Interface The C-Series modems support V.80 for videophone calls. In addition to the C-Series V.
1 Z34-PC q q q q q 56,000 bps data/fax/voice modem Telephone cord (RJ11-RJ11) External MIC Modem driver utility diskette SuperVoice communication software diskette and manual q User's Guide As you can see from our User's Guide, both the Z34-SC and Z34-PC are sophisticated modems with advanced fax and voice features, which will serve you well for years to come. Zypcom thanks you, our valued customer, for purchasing our product, and encourages you to explore our Web Site at www.zypcom.
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CHAPTER 2 Installation Introduction T he Zypcom Z34-SC and Z34-PC are technologically advanced modems with many powerful features for communicating into the twenty-first century. The more you know more about your modem, the more you can do with it. But like most people, you are probably anxious to get your modem online as soon as possible and will consult the manual only as necessary.
2 For either modem, you must provide a telephone line terminated with a modular jack, as well as a screwdriver. For the Z34-PC, you must also provide a set of speakers and/or a phono plug cable (i.e., a miniRC cable) if you use sound in your PC. For the Z34-SC, you must also provide a serial modem cable to connect the modem to your PC. Check with your PC dealer for the correct one for your machine. Normally, a standard modem cable will have pins 1 through 8 and 20.
2 If you set up your modem for Plug-and-Play, Windows 95 will assign the COM port and IRQ. However, it is recommended that you select your own settings, rather than having the computer do it for you. To place the jumpers, refer to the diagram below.
2 Hardware Installation Steps Z34-PC Modem Hardware Installation 1. Turn your computer’s power off. 2. Remove the cover from your PC and retain the screws for reassembly. 3. If you are setting your modem to a COM port and IRQ, select an unused COM port and IRQ and set the jumpers accordingly. If you are setting up your modem for Plug-and-Play, set the jumpers accordingly. 4. Find an empty 16-bit slot inside your computer.
2 6. With the metal bracket facing towards the rear of your computer, insert the modem’s “gold fingers” into the slot. Depending on the type of computer you have, the board may insert easily, or it may require a firm push. Be careful not to twist the board when inserting it. When properly inserted, the card should not wobble around. Secure the modem to the back of your PC with the screw you removed in step 4. 7. Slide the cover back on your PC, and secure it with the screws you removed in step 2.
2 Z34-PC NOTE: When you are using the speakerphone feature, you will notice that sound is output from only one speaker. This is normal. The reason you have two speakers is so that you can use these same speakers in stereo mode when running other multimedia applications from your sound card. NOTE: If you are using Windows 95, go to the "Windows 95" section below. If you are using Windows 3.1, go to the "Windows 3.1" section below. Z34-SC Modem Hardware Installation 1. Turn your computer’s power off. 2.
2 NOTE: The Z34-SC already has an MIC and speaker built-in, so no additional connections of MIC or speaker is required. Windows 95 If you are using Windows 95, then you will need to set up the modem using the new .INF file provided on the Windows Drivers disk. Please refer to the "Windows 95 Modem Setup" section in this chapter. Windows 3.1 If you are using Windows 3.
2 Earphone Headset An optional headset phono jack allows you to use the Z34-PC as a hands free telephone set. The optional headset comes with a microphone and an earphone plug. Connect the earphone plug to the Z34-PC's EPH jack and the microphone plug to the Z34-PC's MIC jack. Windows 95 Modem Setup for Z34-PC and Z34-SC With Windows 95, the setup of your modem will vary depending on the model. Please follow the Windows 95 setup instructions for your specific modem, detailed below.
2 Windows 95 then asks whether or not to use the information already included in the system. If the ISAPNP Unimodem ID is not already supported, Windows 95 requests a disk which we have included and is labeled Windows Drivers. Click on OK and continue. You may need your Windows 95 installation CD to copy needed files to your Windows 95 system. Once all files are copied to your Windows 95 directory, you may install the SuperVoice communication software included with the modem.
2 Z34-SC Installation for Windows 95 Make sure the modem is turned on and you have installed the modem serial cable. Start Windows 95, left click the START icon, go to settings, click on the Control Panel, and select "Modems" with a double click. Check "Don't Detect My Modem", click "Next", and select "Have Disk" from the INSTALL NEW MODEM screen. From the INSTALL FROM DISK screen, choose the drive (A:, B:) where you placed the Zypcom Windows Drivers disk and click OK.
2 NOTE: Do not increase SuperVoice's speakerphone volume-in or volume-out above the 75-percent mark; otherwise, frequent speakerphone feedback will occur, which reduces usability of this feature. Removing Old Modem Drivers CAUTION: On Windows 95, if your old modem is based on a Cirrus Logic 14,400 bps or 28,800 bps chipset, you will need to remove the old modem drivers before installing the new 56,000 bps drivers.
2 Using HyperTerminal with Windows 95 After installing the modem and the .INF file, run Windows 95 HyperTerminal (in the Program Accessories menu). If you haven’t yet used HyperTerminal for this modem, you will have to configure HyperTerminal before it can be used. HyperTerminal first asks for the name of the session. Enter "Zypcom V.34 C-Series" or some other name and press "". A new screen then pops up. Enter a dummy telephone number such as "1234". Set the modem configuration.
2 Installation Problems COM Port Address and IRQ Hardware Conflicts are some of the most common installation problems. They occur when more than one modem uses the same COM port or IRQ. Additionally, other devices, such as the mouse and sound card, may also use conflicting IRQs. To check for a hardware conflict, you must first enter DOS mode. Restart Windows 95 using the Restart to DOS function in the Shut Down menu. Next, start any DOS terminal emulation program such as PCPLUS.
2 CAUTION: Removing the device name from the Computer Properties screen may cause problems later when using the removed board. .INF File Problem To determine whether or not the .INF was loaded properly, go back to the Modem icon in the Windows 95 Control Panel. After double-clicking the icon, check whether your modem’s name is displayed in the Modems Properties screen. If it is, then the .INF file is loaded properly.
2 What To Do On the Computer Properties screen, manually select the modem’s IRQ. This may or may not work. Alternately, free an IRQ line by deleting or removing existing devices or boards, then manually select the modem’s IRQ from the Computer Properties screen. Using the Windows 95 Computer Properties Screen The Computer Properties screen displays the hardware and software drivers used by the computer.
2 6) After double-clicking your modem type, a new screen displays information about your modem. This screen informs you if the device is working properly and if there is a COM port or device conflict. After you’re finished viewing this window, press the OK button to return to the System Properties menu. 7) To remove or eliminate a modem, select the modem in the System Properties menu and press the Remove button.
2 3) To determine which COM port addresses are available, select the Input/Output (I/O) circle at the top of the Computer Properties screen. Scroll down the screen to see what COM ports are being used. The COM port addresses are: COM1 03F8-03FF, COM2 02F8-02FF, COM3 03E8-03EF, and COM4 02E8-02EF. If the address for any of the COM ports is not shown, then that COM port is available.
2 files" will appear in the dialog box, followed by "Installation completed". Click on OK. To access SuperVoice, click on START|PROGRAM|SUPERVOICE|SUPERVOICE. Recording Your Answering Machine Greeting In the Start Up dialog box, click on Greeting. Type your greeting in the Message field, click on Record, then record your greeting. Click on Play to review your greeting. Click on Done when you are finished.
2 Making a Speakerphone Call In the Speaker Phone box, click on S.Phone. Dial the phone number you wish to call by clicking on the numbers on the keypad or by typing them in the Message field. Make sure the "vol" button reads "vol.in". When a connection is made, talk to the person (or the answering machine) on the other end of the line. Click on HangUp and Clear when you are finished.
2 1. You must indicate to your communication software which COM port and IRQ have been assigned to your modem. 2. Set the Data Rate to 115.2 or 57.6 Kbps. Do not select 56,000, 28,800 or 14,400 bps as serial port rates. 3. Set the Flow Control to Hardware (or RTS/CTS). 4. Turn Auto Baud off (or Lock Baud Rate on). 5. Set Terminal Emulator to ANSI. For Fax Setup: 1. Set the Flow Control to Hardware (or RTS/CTS). 2. Set Class 1 fax class.
CHAPTER 3 AT Commands A Hayes AT-compatible modem operates with standard communications software that enables a computer to control the C-Series modems have a standard set of Hayes AT dialing commands, in addition to an expanded set of commands to control options not found in Hayes modems. The Zypcom C-Series modems use the Cirrus Logic modem chipset; thus, the C-Series modems will be compatible with both Zypcom and Cirrus Logic modem drivers found in popular communications software packages.
3 Functional Modem States During asynchronous AT operation, the C-Series modem functions in one of these six modes: q q q q q q Command mode Online (data) mode Online (data) command mode Fax mode Voice mode V.80 Videophone mode Command Mode When the modem is powered up, it enters command mode and is ready to receive AT commands. These commands can direct the modem to dial a telephone number, go off-hook to answer an incoming fax, receive an incoming voice-mail message, and perform other actions.
3 Online Command Mode When the modem receives the +++ escape sequence (or a sequence defined by register S2), it enters online command mode, maintains the data communications link, but suspends data transmission. At this point, commands sent to the modem are executed as they would be in normal command mode. The modem implements a TIES (time independent escape sequence) escape sequence. To return to online data mode, use the ATO command or the ATH command to disconnect.
3 Videophone Mode In 1996 a new standard adopted by the ITU called H.324 allows for videophone calls over ordinary telephone lines. The H.324 standard defines a V.80 modem command set. Zypcom modems that support V.80 standard allows H.324 compatible videophone software to operate together. Now with Zypcom you can see, hear, and talk to remote locations over plain old telephone lines. Basics of the AT Command Set An AT command consists of the AT prefix followed by a string of command characters.
3 Command Responses When you issue an AT command and end of line flag () to the modem, your DTE screen should display an OK message. If the modem does not recognize a command or command parameter, the screen displays ERROR. Table 4-x shows the complete list of messages for both words and digits. The response messages like OK or ERROR are verbose. You can select either a verbose or a character message to be sent by the modem.
3 1. Type AT or lower DTR to reset the command buffer. 2. Use the key to move backward or the key to erase the last character. Multiple commands can be entered into the command buffer. You can control EIA signals, set answer mode, change speaker volume, select response messages, and turn off echo all in one command string. If your command string is longer than 40 characters, an error message will result. AT Command Summary AT commands normally have a number of possible values.
3 The notion (n) in the command description represents a numeric option. For example, in the &Dn command, n is a number from 0 through 3. If you issue a command without a number, the modem assumes 0. For example, if you type AT&F, the modem assumes AT&F0. Table 3-1 shows a list of valid AT commands and provides a page reference for detailed descriptions of each command. TABLE 3-1.
3 &G &K &P &Q &S &T &U &V &W &Y &Z %E %G -C +MS %A %C \A \C \G \J \N \O \Q \T \U \X -J "H "O 3-8 Guard tone control Modem flow control Pulse dial make/break ratio Communication protocol DSR control Diagnostic tests Trellis control Display profiles Store profile Power up profile Store telephone number Auto retrain control Rate renegotiation Generate data calling tone Modulation control Auto-reliable abort character MNP control MNP block size Buffer control Modem port flow control Speed conversion Data mode
3 AT Commands For Data Mode A/ (Repeat Last Command) Repeat the last AT command string issued. An "AT" prefix is not used. Do not terminate this command with . A (Manual Answer) Go off-hook and enter the answer mode. After a few seconds, the modem will initiate an answer tone. Bn (Bell/CCITT) Selects the frequency transmitted by the modem. COMMAND B0 B1* B2 B3 DESCRIPTION Use CCITT V.22 at 1200 bps, and CCITT V.21at 300 bps. Use Bell 212A at 1200 bps, and Bell 103 at 300 bps. Use CCITT V.23 only.
3 D (Dial) Instructs the modem to dial a specified telephone number. The D command has several additional modifying commands which can be used in conjunction with the D command. COMMAND T P , W ! @ ; S=n DESCRIPTION Selects tone dialing. Selects pulse dialing. Inserts a pause of two seconds (or the value in seconds of register S8). Causes modem to wait for dial tone for a period equal to the value of register S6. Switch hook flash = 0.75 seconds duration. Waits for 5 seconds of silence before continuing.
3 Hn (Switch Hook Control) Makes the modem pick-up or hang-up the line, depending on the numerical notion that follows H. COMMAND H0 H1 DESCRIPTION Hang-up the telephone line. Pick-up the telephone line. In (Memory Status) Shows information about the read-only memory (ROM), the firmware revision level, and the revision levels of the data pump. COMMAND I0 I1 I2 I3 I4 I5 I6 I7 I8 I10 I11 DESCRIPTION Reports product code. Reports modem chip firmware version. Verifies ROM checksum. Reports device set name.
3 Ln (Volume Control) Sets the speaker volume when the speaker is on. COMMAND L0,1 L2* L3 DESCRIPTION Low volume Medium volume High volume Mn (Speaker Control) Controls operation of the speaker setting. M2 is great for troubleshooting frequently foiled modem handshakes. COMMAND M0 M1* M2 M3 DESCRIPTION Speaker off. Speaker on until modem detects the carrier signal. Speaker is always on when modem is offhook. Speaker off during dialing, on until modem carrier present.
3 NOTE: The port speed must always be higher than the highest possible line rate (i.e., 38,400 or higher). A port speed of 19,200 will cause the maximum line rate to be 19,200 even if both modems support 56,000 bps. On (Return to Data Mode) Returns to data mode from online command mode (+++). COMMAND O0 O1 DESCRIPTION Returns modem to data mode. Retrains equalizer and then returns to data mode. Qn (Result Codes) Defines whether or not the modem will issue result codes to the DTE during normal operation.
3 Wn (Connection Result Codes) Selects whether the modem sends the DTE independent modem connection result codes for speed, error control protocol, or data compression. COMMAND W0* W1 W2 W3 W4 DESCRIPTION Reports DTE port speeds. Reports DTE port speed. Reports DCE line speed. Reports DTE speed, modulation, protocol, data compression, receive/transmit line speeds. Reports protocol and line speed. Xn (Result Code) Defines the type of result codes to be returned to the DTE.
3 TABLE 4-1 MODEM RESULT CODES WORDS DIGITS X0 CONNECT 1 Y RING 2 Y NO CARRIER 3 Y ERROR 4 Y CONNECT 1200 5 N NO DIAL TONE 6 N BUSY 7 N CONNECT 75/1200 23 N CONNECT 1200/75 22 N CONNECT 2400 10 N CONNECT 4800 11 N CONNECT 7200 24 N CONNECT 9600 12 N CONNECT 12000 25 N CONNECT 14400 13 N CONNECT 16800 59 N CONNECT 19200 14 N CONNECT 24000 62 N CONNECT 26400 63 N CONNECT 28800 64 N CONNECT 31200 65 N CONNECT 33600 66 N CONNECT 38400 28 N CONNECT 57600 N Y CONNECT 115200 31 N FAX 33 N DATA 35 N RINGBACK 45 N
3 WORDS CONNECT 36000 CONNECT 33333 CONNECT 37333 CONNECT 38400 CONNECT 41333 CONNECT 42666 CONNECT 44000 CONNECT 45333 CONNECT 46666 CONNECT 48000 CONNECT 49333 CONNECT 50666 CONNECT 52000 CONNECT 53333 CONNECT 54666 CONNECT 56000 CONNECT 57333 3-16 DIGITS X0 32 N 33 N 34 N 28 N 35 N 36 N 37 N 38 N 39 N 42 N 43 N 53 N 54 N 55 N 56 N 57 N 58 N X1 Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y X2 Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y X3 Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y X4 Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y
3 Yn (Long Space Disconnect) Some computer systems end a data session by sending or receiving a continuous break signal. This capability only works when the modem is online with no error control. When the long space disconnected is enabled, the modem detects the incoming break and signals the remote modem to hang up. COMMAND Y0* Y1 DESCRIPTION Disables Long Space Disconnect. Enables Long Space Disconnect. The modem disconnects when it receives 1.6 or more seconds of a continuous break signal.
3 COMMAND &C0 &C1* DESCRIPTION CXR always on. CXR follows true carrier. &Dn (DTR Control) Determines how DTR is interpreted by the modem. &D operates differently in asynchronous and synchronous communication and also works in conjunction with register S25 in asynchronous communication. COMMAND &D0 &D1 &D2* &D3 DESCRIPTION In async mode, modem ignores DTR. Modem switches to command mode when DTR switches from on-to-off.
3 tone is a frequency generated by the answer-side modem. COMMAND &G0* &G1 &G2 DESCRIPTION Disables guard tone. Enables 550-Hz guard tone. Enables 1800-Hz guard tone. &Kn (Flow Control) Specifies the DTE-to-modem flow control. Software flow control uses the characters XOFF and XON to stop and start data transmission, respectively, both to and from the DTE. Bidirectional hardware flow control uses RTS/ CTS to stop and start data from the modem. COMMAND &K0 &K3* &K4 DESCRIPTION Disables flow control.
3 function as &Q0. Use the \Nn command to specify which error control protocol is used during a connection. &Sn (DSR Control) Controls how the modem treats the DSR signal. COMMAND &S0* &S1 DESCRIPTION DSR is always active. DSR is active only during handshaking and when carrier is lost. &Tn (Diagnostic Tests) Used to initiate and terminate loopback tests for testing modem-to-modem and DTE-to-modem data communication integrity. COMMAND &T0 &T1 &T4 &T5 &T6 &T7 3-20 DESCRIPTION Terminates test in progress.
3 &T8 Initiates Local Analog Loopback with selftest. &Un (Trellis Control) Selects whether the modem transmits or receives modulated 9600 bps carrier with QAM or Trellis encoding for V.32. COMMAND &U0* &U1 DESCRIPTION Enables Trellis coding with QAM as fallback. QAM modulation only &Vn (Display Stored Profiles) Causes the modem to display its current configuration as well as other stored profiles and telephone numbers.
3 COMMAND &Y0* &Y1 DESCRIPTION Recall stored profile 0 on power-up Recall stored profile 1 on power-up &Zn=x (Store Telephone Numbers) Stores telephone number x in location n, where n=0 through 3. The maximum length of each stored telephone number is 68 characters (including the automatic logon sequence). Storing telephone numbers with this command retains them in the modem's memory even during power loss.
3 modem always responds to any rate change initiated by the remote modem. COMMAND %G0 %G1* DESCRIPTION Disabled Enabled -Cn (Generate Data Calling Tone) Allows the DTE to select whether the modem sends a 1300-Hz calling tone or V.8 calling tone when originating a data modem connection. COMMAND -C0* -C1 -C2 DESCRIPTION Calling tone disabled. 1300-Hz calling tone enabled. V.8 calling tone and 1300-Hz calling tone +MS=m (Modulation Control) The +MS command controls the modulation used on a connection.
3 2400. V34 or V34S is for 28800 to 2400. V32B is for 14400 to 7200. V32 is for 9600 and 4800. V22B is for 2400 and 1200. V22 is for 1200. V21 is for 300. Automode allows the modem to find the highest common speed for each connection given the line conditions encountered by the modem. This parameter is also controlled by the Nn command. 0 is automode disabled and 1 is automode enabled. The minimum line rate parameter specifies the lowest data rate at which the modem will establish a connection.
3 +MS Examples (DTE speed is 115200): Set 21600 as max rate +MS=V34B,1,0,21600;B1 Set 9600 as min rate +MS=V34B,1,9600,0 Set 28800 only +MS=V34,1,28800,28800 Set 9600 to 300 only +MS=V32,1,0,0;B1 Set 9600 to 4800 only +MS=V32,0,0,0 Set 33600 to 9600 +MS=V34B,1,9600,33600 ERROR CONTROL AND COMPRESSION COMMANDS Your modem supports two types of error correction (MNP 2-4 and V.42) and data compression (MNP5 and V.42bis). V.
3 %Cn (MNP 5 Control) Controls whether the data sent during the MNP frame is compressed using MNP Class 5 compression standard. COMMAND %C0 %C1* DESCRIPTION No compression Enables MNP 5 data compression. \An (MNP Block Size) Specifies the maximum number of data bytes in an MNP data frame. A smaller frame size may improve throughput on high-impairment (noisy) telephone lines.
3 \Gn (Modem Port Flow Control) Used for special cases when a non-error controlled, nonbuffered modem calls a modem operating in buffered mode. COMMAND \G0* \G1 DESCRIPTION Disables port flow control. Sets port flow control to XON/XOFF. \Jn (Speed Conversion) If enabled, the serial port speed automatically changes to the modem-connection speed. This forces the user to change the DTE-to-modem bps rate, if needed.
3 COMMAND \N0 \N1 \N2 \N3* \N4 DESCRIPTION Normal data mode with buffering Normal data mode with buffering Force MNP reliable only mode V.42/MNP auto-reliable mode Force V.
3 \Qn (Serial Port Flow Control) Specifies the DTE-to-modem flow control. Software flow control uses the XOFF command to stop and the XON characters to start data transmission, both to and from the DTE. Unidirectional hardware flow control uses the CTS control line to stop or start data from the DTE only, while bidirectional hardware flow control also uses the RTS control to stop or start data from the modem. COMMAND \Q0 \Q1 \Q2 \Q3* DESCRIPTION Disables flow control.
3 \Xn (XON/XOFF pass-through) If software flow control is enabled (\Q1), this command defines whether the XON (11h) and XOFF (13h) characters received from the DTE are sent to the remote modem. If the modem port flow control is enabled (\G1) in normal mode, this command specifies whether the XON and XOFF characters received from the remote modem are sent to the DTE. In both cases, flow control operation is not affected. COMMAND \X0* \X1 DESCRIPTION Processes flow control characters.
3 "H0 "H1 "H2 "H3* Disables V.42 bis. Enables V.42 bis only when transmitting data. Enables V.42 bis only when receiving data. Enables V.42 bis for both transmitting and receiving data. "On (V.42bis Word Length) This command sets the maximum number of characters that can be compressed into one V.42bis word. The default is 32 bytes. The range is 6 to 250 characters.
3 q q q q Storable Bit-mapped Reserved Read only A storable S-register is one whose value can be permanently saved with the &W command (see Table 6-1). Bit-mapped registers contain the values of multiple commands. Reserved registers and read only registers should never be written to. The content of storage registers can be changed using the ATSn=x command, where "n" is the register number and "x" is the value to be stored. The contents of the Sregisters can be read using the ATSn? command.
3 CAUTION: An asterisk (*) next to the S-registers in this section indicates that it is read only. Escape Character (S2=0-128) Register S2 defines an ASCII character as the escape character. Default = 43 (ASCII +). Return Character (S3=0-127) Register S3 defines the end-of-line character. Upon receiving this character, the modem executes a command line. The end-of-line character is also appended to response messages. Default = 13 (ASCII CR or on a keyboard).
3 Dial Tone Delay (S6=2-255) Register S6 determines how long the modem will wait after going off-hook before dialing the telephone number. The S6 register is in effect when the X command is set to 0, 1 or 3. When the X command is equal to 2 or 4, this register is ignored. Also, since the W modifier overrides S6, the modem will wait the length of the failed call timer (S7) for dial tone when the W modifier is part of the dial command string. Default = 2 (seconds).
3 Valid Carrier Detect (S9=1-255) Register S9 sets the amount of time that carrier must be received before it is determined to be a valid signal. Each number between 1 and 255 represents the number of tenths of a second that the modem must see carrier before responding to it. Default = 6 (0.6 seconds). Lost Carrier Disconnect (S10=1-255) Register S10 determines the amount of time the modem must wait to disconnect after losing carrier from the remote modem.
3 Guard Time (S12=0255) Register S12 controls the amount of time, after receiving three escape characters, that must elapse before entering on-line command mode and sending the OK message to the DTE. Default = 50 (1 second). S13 Reserved N/A S14 Bit-mapped N/A S15 Reserved N/A S16 Bit-mapped N/A S17 Reserved N/A Test Duration (S18=0-255) Register S18 sets the duration of the modem’s diagnostic tests. When S18 is set to 0, the test continues indefinitely until stopped by the operator.
3 S19 Reserved N/A S20 Reserved N/A S21 Bit-mapped N/A S22 Bit-mapped N/A S23 Bit-mapped N/A S24 Reserved N/A DTR Detect Time (S25=0-255) Register S25 determines the amount of time the modem will wait before detecting a change in the DTR signal. Default = 5 (0.05 seconds).
3 Inactivity Timer (S30=0-255) Register sets the length of time (in minutes) that the modem stays online before disconnecting when no data is transmitted or received between the DTE and modem. Default = 0 (minutes). S31 Bit-mapped N/A Max Line Speed (S37=0-19) Register selects maximum line speed to be attempted. Note that the +MS command also controls this capability.
3 12 = 16,800 13 = 19,200 14 = 21,600 15 = 24000 16 = 26,400 17 = 28,800 18 = 31,200 19 = 33,600 20 = x2 36,000 21 = x2 33,333 22 = x2 37,333 23 = x2 41,333 24 = x2 42,666 25 = x2 44,000 26 = x2 45,333 27 = x2 46,666 28 = x2 48,000 29 = x2 49,333 30 = x2 50,666 31 = x2 52,000 32 = x2 53,333 33 = x2 54,666** 34 = x2 56,000** 35 = x2 57,333** **NOTE: Current download speeds are limited to 53,333 bps due to FCC rules that restrict modem power output.
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CHAPTER 4 Troubleshooting General A lthough the modem’s default option settings are suitable for most PC computers, a default option setting can cause problems if it is incorrect for your application.
4 q Check telephone line with a regular phone to make sure dialtone is present. q Are speakers connected to the SPKR jack (Z34PC)? q Is the MIC connected to the MIC jack (Z34-PC)? q SuperVoice has been set up to use MIC and speakers for input/output settings, not for telephone handset. If you encounter basic communication problems (cannot dial, answer, or connect), run through the troubleshooting procedures and attempt to isolate the source of your trouble.
4 NOTE: On the Z34-SC, the DTR LED will be on if the correct comport is selected. If still unsuccessful, follow the procedures described below to determine the problem. Cable Connections 1. Check that the modem and computer or terminal are plugged in and turned on. When the modem has power and the correct COM port is selected, the DTR and RTS LEDs are on (Z34-SC only). 2. Check the modem cable. Make sure it is specifically wired for your DTE.
4 Terminal or Computer Settings These are the most common problems involving terminal or computer settings: 1. Check that your computer or terminal operates at a speed the modem can handle: 115,200, 57,600, 38,400, 19,200, 9,600, 4,800, 2,400, 1,200 and 300 bps. Do not set your PC/terminal for 33,600, 28,800 or 14,400 bps. 2. Make sure that your terminal or communications software is set for 10 bits per character. The total of the data bits, parity bit, and the start and stop bits must equal 10.
4 Other Communications Programs If you are using a different communications software package, verify that the modem’s software settings match those of the communications software or terminal. 1. In the modem’s default setting, CXR is set normal. Some software packages need CXR to be on. In AT autodialing, you can control this option using the AT&Cn command. 2. Check the setting for DSR. The default setting is forced on, but it can be changed using the AT&Sn command in AT autodialing. 3.
4 Other Common Problems DTE Doesn’t Display When your modem and computer or terminal are properly connected, the screen should display what you type. If it doesn’t, enable local echo ATE1 and type the command blindly (no echoing). If ATE1 was already set, then check to see if the CXR and DSR LEDs are on (on the Z34-SC). If not, set them on AT&C0&S0&Wn Also, check to make sure that the modem cable you have contains RTS (pin 4) and that the RTS LED is on.
4 Screen Displays Unusual Characters If your DTE screen displays unusual characters while you are off-line, check the speed setting of your communications software or terminal and the character length and parity. To match the software settings to the modem, type A7 and get the OK message back. If you are on-line, a common problem involves error control. If your modem is set for error control but you did not complete an error control handshake, you can see a lot of unusual characters on your screen.
4 Delays On Connections A small amount of character delay is normal for errorcontrolled communication links. Large file transfers normally call for a communications software file transfer protocol to be used. Zypcom recommends that a protocol with large data packets be used, such as Ymodem-G or Zmodem, for the best data throughput rates. PPP has delays built in to it as well. However, these described delays are barely noticeable.
4 Step Two: Modem Retraining. If modem retraining is the problem, you will be able to determine it easily. Go into on-line command mode using the escape sequence (+++) and wait for OK, turn on the speaker (ATM2), then go back on-line (ATO). Your speaker is always on now. You can adjust the manual volume control, and you can tell when a modem does a short or long retrain. During the retraining, no data can be transmitted; hence, delays will occur.
4 Step Three: Line Speed Changes. Sometimes delays can result from a series of retrains that reduce the line speed of the modem. To check the line speed, go into on-line command mode (+++), wait for OK, send the ATW3 command, then go back on-line (ATO). Observe the result messages, particularly the transmit and receive speeds. The speed will be slow (e.g., 9600) for noticeable delays to occur. If you decide the line speed is a problem, you have three basic solutions: 1.
4 Modem Drops the Connection Frequent line drops are normally due to a noisy telephone line, a low-quality modem at one end of the connection, or a modem incompatibility between the modems. If the line or lines are bad, the remedy is simple. If you experience frequent connection drops, check to make sure you have the latest code for your Zypcom modem. Call our BBS (510-783-2580) to get a new code to reflash your modem, if any.
4 To see if this is what you are experiencing, reduce the maximum line speed to a lower number. (Try a real low number first, for example, 14400.) Then, eventually go back up to see at what speed the problem occurs.
4 If the modem does not automatically answer when connected to a minicomputer or mainframe and the DTR and AA LEDs are on, turn off the echo and response message options: ATE0Q1&Wn In international markets or for modems attached to PABXs, the ring signal that is generated is different than the modem expects. If the AA LED doesn't flash on an incoming ring, then the modem does not recognize the incoming line signal as a "ring." Call Zypcom technical support.
4 3. If you hear dial tone but the modem does not dial, change the X command setting from X4 to X1, since you probably have a nonstandard dial tone. Modem Dials But Cannot Communicate If the modem dials a telephone number but does not establish a communication link, something may be wrong with the remote modem. Refer to the section entitled "Modem Fails to Handshake.
4 Other Frequently Encountered Problems Does Not Dial Correctly Your phone system may require that you obtain an outside line before dialing. In this case, place the numeric prefix for the outside line (usually the number 9) before the phone number in your dialing string. Place a comma immediately after the number 9 in the dialing string to create a two-second delay at that point in the dialing.
4 Modem COMM Error or Modem Not Found Make sure you have selected the correct COM port in your communications software setup. Check all the cable connections and make sure they are secure. In fax software, make sure you have selected the correct fax class (Class 1). The port setting in the Control Panel in Windows may not be set properly. Modem Would Not Fax Make sure you have selected Class 1 as your fax class. Make sure that you do not have another communications program open.
4 Technical Support If you could not solve your problem, please call Zypcom technical support for assistance. Our number is (510) 783-2501; our hours are 8:00am to 5:00pm PST, Monday through Friday. Our BBS number is (510) 7832580. Our E-mail address is zypcom@tdl.com. Our WWW site is zypcom.com.
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APPENDIX A Specifications Chipset Cirrus Logic CL-MD56xx DSP Z34-PC 16C550A/16C450 Register Compatible Buffered UART Z34-PC and Z34-SC 16bit ISA Parallel Bus and Plug and Play Interface Data Communication Standards Modulation Vx2, V.34+, V.34, V.32bis, V.32, V.23, V.22bis, V.22, V.21 and Bell 12A & 103 Data Rates 57.3K, 56K, 54.6K, 53.3K, 52K, 50.6K, 49.3K, 48K, 46.6K, 45.3K, 44K, 42.6K, 45.3K, 44K, 42.6K, 41.3k, 37.3K, 36K, 33.3K, 33.6K, 31.2K, 28.8K, 26.4K, 24K, 21.6K, 19.2K, 16.8K, 14.
A Error Control V.42 and MNP 2-4 error correction Compression V.42bis or MNP Class 5 Commands AT & AT Voice Data: AT Hayes Compatible Fax: EIA/TIA 578 Fax Class 1 Voice: EIA/TIA IS-101 compatible Video: V.80 compatible Fax Standards Modulation ITU-T V.17, V.29, V.27 ter, and V.21 channel 2 Data Rate 14,400, 12,000, 9600, 7200, 4800, 2400, 300 bps Format ITU-T T.
A Handshake ITU-T T.30 Group 3 Fax Voice Standards Voice Sample Rate 11,025, 9600, 8000, 7200, 4800 Hz Voice Compression 3-bit/4-bit ADPCM 8-bit/16-bit Linear PCM CL1:8-bit Cirrus A-law Functional Caller ID: Formatted and unformatted messages Automatic Sleep (Power-Down) and Wake-Up Physical/Electrical/Environmental Dimensions Z34-PC: 3.5" x 6.2" Z34-SC: 1.5"H; 4.5"W; 7.
A S-RAMS ITU-T 56K bps upgradeable Cables 7' telephone cable Connectors One RJ11 jack for a telephone line connection Speaker Interface Minimum load 8 Ohm, maximum load 100 Ohm Humidity 20-90% (non-condensing) Temperature 0° to 70° C (32° to 158° F) Transmit Level -10 dBm ±1 dB dialup; programmable. Receive Level -9 to -43 dBm. Carrier is deactivated at -48dBm or below.
APPENDIX B APPENDIX IS-101 Voice Commands IS-101 VOICE MODE AT COMMANDS Your modem implements a voice AT command set that allows a DTE to record and play back voice messages. This product is compatible with EIA/TIA IS-101 voice command set. Supported IS-101 commands and descriptions are listed below: +FCLASS=n Mode selection. Default is 0. Range is 0-1, 8. n=0, 1, 8 n=0*Data mode n=1 Class 1 fax mode n=8 Voice mode enabled +FLO=n Flow control select.
B +VBT=m Buffer threshold setting. Command sets assert and deassert threshold points for modem’s transmit buffer. Default is 192,320. +VCID=n Caller ID selection: n = 0 disables Caller ID, n = 1 enables Caller ID formatted, n = 2 enables Caller ID unformatted. Default is 0. +VDR=m Distinctive ring selection (can be disabled by +VEM command). This command has two parameters which are separated by a comma. Intervals are in .1 seconds. Default is 0,0 and the range is 0-255, 0-255.
B VGT=n Volume selection for voice playback. Default is 128. Range is 121-131. +VIP This command causes the modem to reset all voice parameters to the factory default values. +VIT=n DTE/DCE inactivity timer. This command sets the length of time the modem can be inactive in voice mode before resetting its relays (+VLS=0). This command also changes back to data mode. Default setting is 0 (disables) and the range is 0-255 seconds. +VLS=n Relay/playback control.
B 7 8 9 10 11 12 13 14 15 16 Internal MIC and speaker connected to telco. Squelching is active. DCE off-hook. DCE connected to telco. N/A N/A N/A N/A N/A External microphone and external speaker connected to telco. Squelching active. DCE off-hook.DCE connected to telco. LP provided with power to detect hook condition. Handset or headset connected to DCE. DCE on-hook. LP connected to telco. Handset or headset connected to telco. DCE connected to telco. Handset or headset connected to telco with MIC muted.
B +VRA=n Ringback-goes-away timer. Command selects the length of time modem waits between ringbacks before the DCE assumes the remote party has gone off-hook. Default is 50. Each increment is .1 seconds; therefore, default of 50 is 5.0 seconds. Range is 0-50. +VRN=n Ringback-never-appeared timer. This command sets length of time modem waits for ringback when originating a call in voice mode. If timer times out, an ERROR message is sent. If ringback is detected before timeout, an OK is sent.
B +VSM=m Compression method selection. This command contains four parameters that specify the voice compression method, voice sampling rate, silence compression sensitivity, and degree of silence expansion. The format is m=,,,. Default is 140, 8000,0,0.
B +VSP=n Speakerphone on/off control. This command turns the speakerphone mode on (n=1) and off (n=0). #VSPS=n Speakerphone type selection. This command determines which type of speakerphone is used when the modem receives a +VSP command. If n=0, telephone emulation mode is selected. If n=1, digital speakerphone is used. +VTD=n Beep tone duration timer. This command sets the DTMF duration. Default is 100. Each increment is .01 seconds; therefore, default of 100 is 1 second. The range is 5-255.
B Appendix B-8
APPENDIX C Fax Commands FAX CLASS 1 AT COMMANDS Your modem implements the EIA-578 data/fax Class 1 AT command set standard. This AT command set allows a DTE (with Class 1 communication software) and a Zypcom C-Series modem to communicate with group 3 fax machines. The fax identity and test commands are listed below. Fax Identity Commands These commands are used by fax software to identify the modem and its capabilities.
C +FMR? Identifies product version number +FREV? Identifies product version number Fax Class 1 AT Commands +FCLASS=n Mode selection default=0. Settings: 0, 1, 8, 80. The DTE can be 300 to 115200 bps when +FCLASS=0. When +FCLASS=1, the DTE should be set to 19200 bps. Setting to 8 selects IS-101 voice mode. +FRH=n Receives HDLC data type. The only setting for this command is 3. +FRM=n Selects receive data modulation. Modulation standards followed by ST represent short training. Settings are 24 (V.
C +FTH=n Transmits HDLC data. The only setting for this command is 3. +FTM=n Selects transmit data modulation mode. Modulation standards followed by ST represent short training. Settings are 24(V.27ter/2400), 48(V.27ter/4800), 72(V.29/7200), 73(V.17/7200), 74(V.17ST/7200), 96(V.29/9600), 97(V.17/9600), 98(V.17ST/9600), 121(V.17/12200), 122(V.17ST/12200), 145(V.17/14400) and 146(V.17ST/14400). This command is normally controlled by fax Class 1 software.
C Appendix C-PB
APPENDIX D Modem Terms This chapter will address some basic terminology associated with your modem and your communications software. Modem Modem is a compound word of Modulator and DEModulator. It is used for computer communication. Modem translates computer data to analog signal (modulation) that travels through the telephone network and reaches the other modem. The remote modem translates the analog signal received back to data (demodulation) and sends to the receiving end computer.
D DTE / DCE DTE stands for Data Terminal Equipment and DCE stands for Data Communication Equipment. The Computer or terminal is the DTE and the modem is the DCE. DSP Digital Signal Processor. It performs all digital signal processing functions for the chipset, such as modulation schemes and modem handshakes. UART UART (Universal Asynchronous Receiver Transmitter) is the device used in DTE or DCE for asynchronous data receiving and transmitting. The normal UART device used in PC is NS16450.
D resets and then configures the modem to NVRAM stored profile 0. AT&F S0=1 &W1 &Y1 &F configures the modem to factory default. S0=1 configures the modem to answer after 1 ring. &W1 saves the active configuration to stored profile 1. &Y1 configures the modem to use NVRAM stored profile 1 as the power-up defaults. INIT Strings An initialization string is a series of specific commands that prepares a modem to operate with communications software.
D Data Rates and DTE Speed A data rate (or line speed) is sometimes confused with a DTE speed setting in PC software. In this manual, AT commands from the DTE are referred to as a speed or DTE speed. Data rate or line speed refer to the speed of the connection between modems.
D XON/XOFF A handshaking, flow control mechanism that communicates that the device is ready to accept more data. The flow control is embedded into the data stream by using special characters. Hence, transmit on (XON), transmit off (XOFF) are often referred to as software flow control. RTS/CTS RTS stands for Request To Send, a handshake line in which the computer tells the modem it can accept new data. CTS stands for Clear To Send, which allows the modem to tell the computer that it can accept new data.
D Duplex A communication system which is capable of communicating in both directions can be half duplex or full duplex. Half duplex allows communication in both directions, but only one direction at a time. Full duplex allows data to be transmitted in two directions simultaneously. Off-hook Picks up a telephone receiver. You take the modem offhook to dial or answer, and it remains off-hook while you are connected. On-hook Hangs up a telephone receiver.
APPENDIX E Removing Win 95 Drivers If you have previously installed a modem profile based upon a Cirrus Logic chipset (14.4K, 28.8K, old 33.6Kbps) in the Windows 95 system, you must remove it before installing the new modem .INF drivers. It is also a good idea to remove any additional modem profiles that are not actually installed on the PC. 1) Insert the Zypcom Windows Drivers diskette containing the new INF files (mdmcir.inf and serwvcir.inf) into the floppy drive.
E One way to find these keys is to do a search for Zypcom or Cirrus in the registry file. You will find these three keys when you search for Zypcom or Cirrus. You should delete these three keys (sub-directories) to be sure the new .INF files will be installed properly. 4) Take a look at the \WINDOWS\INF directory. Remove drvidx.bin. Then remove the two files that begin with “OEM” that correspond to MDMCIR.INF and SERWVCIR.INF. OEM1.INF on the system contains the MDMCIR.INF file, and OEM2.
E 7) Windows 95 will display the modem, and you will see a “Properties” button. Press the Properties button, press the Connection tab, press the Advanced button, and check the box for “Record Log File”. This will set up the system so that whenever you use the modem with Microsoft Phone, a log file will be recorded in \WINDOWS\MODEMLOG.TXT This is very useful for debugging, if needed.
E Appendix E-PB
APPENDIX F Downloading Firmware Downloading the Latest Modem Firmware 1) Load your communication software (SuperVoice terminal or ProComm). 2) Enter Local Command mode. (See your communication software’s instruction manual for directions.) 3) In your communication software, set the communication parameters to the following: q 115.2-Kbps data connection (modem to DTE) q q q q Parity: none Data bits: 8 Stop bits: 1 RTS-CTS flow control 4) Test the connection by typing “AT”.
F 6) Set modem up for downnload, then type the following (in upper- or lower-case): AT@L Modem goes off-hook momentarily and several LEDs will go off, then back on. 7) The screen message “>>>Download Begin” appears. If the “>>>” does not appear, turn off the modem and start the procedure again at Step 5. 8) To continue the download procedure, press the Page Up key. 9) From the menu of download protocols, choose “R” for the RAW ASCII downloading protocol.
F CAUTION: Don’t abort the transmission (using the Escape key or by turning off the PC or modem) until after you see the “..... END” message. If this happens, you must re-install downloadable code with the burning-in procedure in Section II above. 12) To see the version of firmware you've downloaded, type ATI1 13) The modem with the new downloaded code may now be configured for your application.
F Appendix F-4
