WTI Part No.: 12548 Rev.
5 Sterling · Irvine · California 92618-2517 (949) 586-9950 · Toll Free: 1-800-854-7226 Fax: (949) 583-9514 · http://www.wti.
1. Introduction The RMM Rack Mount Data/Fax Modem is designed for applications that require a single “Industrial Strength” modem that easily installs in equipment bays. The unit requires only 1 rack space, thus eliminating the hassle of equipment trays and power bricks required for “Plastic Box” modems. Figure 1: Front Panel The heart of the RMM is the popular and highly reliable U.S. Robotics® Sportster® 28.8 modem card.
RMM User’s Guide 2. Unit Description 2.1. Front Panel Indicators LED AA (Auto Answer) CD (Carrier Detect) Status On Off Flash On RD (Receive Data) SD (Send Data) TR (Data Terminal Ready) Flash CS (Clear to Send) On Page 2 Flash On Meaning Answer mode only: Modem is answering a call and DIP Switch 5 is UP (Enable Auto Answer), or register S0 is set to 1 (Auto Answer, 1 Ring). No activity, or modem is originating a call. Incoming call.
3. Operation The following commands can be used to display current configuration status and various help menus: ATI4 AT$ ATD$ AT&$ ATS$ ATZ3 View Modem Setup: Basic Help Menu: Dial Command Help Menu: Configuration Command Help Menu: List of S-Registers: Reset Modem to Default Profile 0: When the View Modem Setup command (ATI4) is invoked, the RMM will display a status screen as shown below.
RMM User’s Guide 4. Installation 4.1. 48 Volt DC Power Option The 48 Volt DC input is not polarity sensitive. Therefore, you can connect either positive or negative wires from your 48 volt power source to either input and the internal circuitry will adjust for the proper polarity. Input Range: 40 - 60 Volts DC, 200 milliamps maximum.
Installation 4.2. Dip Switch Settings Switch Factory Setting 1 Function Data Terminal Ready (DTR) Override l 2 l 3 l 4 l 5 l 6 l 7 l 8 l UP Normal DTR operations: Computer must provide DTR signal for modem to accept commands. Dropping DTR terminates call.
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Installation 5. Command Summary · Type commands in either upper or lower case. Do not use a · · · · combination of upper and lower case characters. Use the Backspace key to delete errors. Note that the original AT command is stored in the modem buffer, and cannot be deleted. Some commands have numeric options. If these commands are invoked without a numeric option, the modem will assume option 0 (zero). For example, when the command ATB is invoked, the modem will assume command ATB0 was intended.
RMM User’s Guide Command Function/Options Dn Dials the specified phone number. Can also include the following command options: L Re-dials last number dialed * P Pulse (Rotary) Dial Mode R Originates call using answer (reverse) frequencies. Sn Dials phone number string stored in NVRAM at position n (n = 0-3). Phone numbers are stored with the &Zn=s command. T Tone Dial Mode , (Comma) Two Second Pause. Comma pause duration can be redefined via the S8 Register.
Command Summary Command Function/Options In Displays the following information. I0 Four-digit product code I1 Results of ROM checksum I2 Results of RAM checksum I3 Product type I4 Current modem settings I5 Nonvolatile memory (NVRAM) settings I6 Link diagnostics I7 Product configuration Operates speaker. M0 Speaker always OFF * M1 Speaker ON until CONNECT M2 Speaker always ON M3 Speaker ON after dial, until CONNECT Returns online.
RMM User’s Guide Command Function/Options Xn Sets result code displayed. Default is X4.
Command Summary Command Function/Options Zn Resets modem based on current DIP Switch settings. Z0 Resets modem to NVRAM profile selected by the Y command Z1 Resets modem to NVRAM profile 0 Z2 Resets modem to NVRAM profile 1 Z3 Resets modem to factory default profile 0 (&F0) Z4 Resets modem to factory default profile 1 (&F1) Z5 Resets modem to factory default profile 2 (&F2) Displays a list of ampersand (&) commands. Enables/disables additional result code subsets (see Xn).
RMM User’s Guide Command Function/Options &Fn Loads a read-only (non-programmable) factory configuration. &F0 Generic template * &F1 Hardware flow control template &F2 Software flow control template Sets Guard Tone. * &G0 No guard tone (U.S. and Canada) &G1 550 Hz guard tone (some European countries), requires B0 setting. &G2 1800 Hz guard tone (U.K.), requires B0 setting.
Command Summary Command Function/Options &Nn Sets connect speed. If connection cannot be established at this speed, the modem will hang up. Sets ceiling connect speed if &Un is greater than 0 (See &Un). * &N0 Variable rate &N1 300 bps &N2 1200 bps &N3 2400 bps &N4 4800 bps &N5 7200 bps &N6 9600 bps &N7 12,000 bps &N8 14,400 bps &N9 16,800 bps &N10 19,200 bps &N11 21,600 bps &N12 24,000 bps &N13 26,400 bps &N14 28,800 bps &N15 31,200 bps &N16 33,600 bps Sets pulse (rotary) dial make/break ratio. * &P0 U.
RMM User’s Guide Command Function/Options &Tn Begins test modes. &T0 Ends Test in Progress &T1 Analog Loopback &T2 Reserved &T3 Local Digital Loopback &T4 Enables Remote Digital Loopback * &T5 Prohibits Remote Digital Loopback &T6 Initiates Remote Digital Loopback &T7 Remote Digital with self test and error detector &T8 Analog Loopback with self test and error detector Sets floor connect speed when &Un is greater than 0. &Nn is the ceiling connect speed (See &Nn).
Command Function/Options &Zn=s Writes phone number s to NVRAM at position n (n = 0-3). Writes last executed dial string to NVRAM at position n (n = 0-3). Displays the phone number stored at position n (n = 0-3). Displays the last executed dial string. Escapes to online-command mode.
RMM User’s Guide 6. S-Registers Note: To change a setting, use the ATSr=n command, where r is the register and n is a decimal value from 0-255 (unless otherwise indicated). Register Default S0 1 Sets the number of rings on which to answer in Auto Answer Mode. When set to 0, Auto Answer is disabled. See DIP Switch 5 (Section 4.2). S1 0 Counts and stores the number of rings from an incoming call. Register S0 must be greater than 0. S2 43 Stores the ASCII decimal code for the escape code character.
S-Registers Register S10 (continued) Default Function Although it is not recommended to connect to a line with call waiting, the S10 register can be adjusted upward to prevent the modem from misinterpreting the second call signal as a remote disconnect. If call waiting is a problem, it is preferable to contact your phone company to determine the command to temporarily disable call waiting (typically *70W). For example: ATDT *70W phone number.
RMM User’s Guide Register Default S14 0 Reserved S15 0 Bit-mapped register setup. To set the register, see instructions for S13. Value Result Bit 0 1 Disable ARQ/MNP for V.22. 1 2 Disable ARQ/MNP for .22bis. 2 4 Disable ARQ/MNP V.32 / V.32bis / V.32terbo. 3 8 Disable MNP handshake. 4 16 Disable MNP level 4. 5 32 Disable MNP level 3. 6 64 MNP incompatibility 7 128 Disable V.42 operation. S16 0 Bit-mapped register setup. To set the register, see instructions for S13. Value Result Bit 0 — Reserved.
S-Registers Register Default S25 5 S26 S27 0 0 S28 0 8 255 Function Sets the duration (in hundredths of a second) that DTR must be dropped in order to be interpreted as a DTR loss. Allows the modem to differentiate between a random glitch and a true DTR loss. In most cases, the default value can be used. The S25 register is useful for setting compatibility with older systems running under older operating software. Reserved. Bit-mapped register setup.
RMM User’s Guide Register Default S29 20 Sets the duration (in tenths of a second) of the V.21 answer mode fallback timer. S30 0 Reserved. S31 128 Reserved. S32 2 Bit mapped register setup for 28.8 modems only. To set the register, see the instructions for S13. Value Result Bit 0 1 V.8 Call Indicate enabled. 1 2 Enables V.8 mode. 3 8 Disable V.34 modulation 4 16 Disable 33.6 Kbps support. 5-7 32-128 Reserved S33 0 Bit mapped register setup for 28.8 modems only.
S-Registers Register Default S38 0 Function Sets an optional delay (in seconds) before a forced hang-up and clearing of the Transmit buffer when DTR drops during an ARQ call. This allows time for a remote modem to acknowledge receipt of all transmitted data before it is disconnected. When set at the default (0), the modem immediately hangs up when DTR drops. This option applies only to connections terminated by dropping DTR.
RMM User’s Guide 7. Specifications Compatibility: ITU-T V.34+: 33.6 Kbps ITU-T V.34: 28.8 Kbps ITU-T V.32 bis: 14.4 Kbps ITU-T V.32: 9600 bps ITU-T V.22 bis: 2400 bps Bell: 212 / V.22, 103 / V.21 Supports: V.42 / MNP 2-4 Error Control V.42 bis / MNP 5 Data Compression. Command Set: Industry Standard “AT” Commands Status/Help: Status display shows current settings and stored numbers. A Help display summarizes the command set and S-Register functions. FCC Reg. No.: CJEUSA-24375-M5-E Ringer Equivalence: 0.
8. Customer Service Customer Service hours are from 8:00 AM to 5:00 PM, PST, Monday through Friday. When calling, please be prepared to give the name and make of the unit, its serial number and a description of its symptoms. If the unit should need to be returned for factory repair it must be accompanied by a Return Authorization number from Customer Service. WTI Customer Service 5 Sterling Irvine, California 92618 949-586-9950 Toll Free: 1-800-854-7226 Fax: 949-583-9514 http://www.wti.
RMM User’s Guide Trademark and Copyright Information WTI and Western Telematic are trademarks of Western Telematic, Inc. All other product names mentioned in this publication are trademarks or registered trademarks of their respective companies. Information and descriptions contained herein are the property of Western Telematic, Inc. Such information and descriptions may not be copied disseminated or distributed without the express written consent of Western Telematic, Inc.
