MULTI-TECH SYSTEMS, INC. MT2834ZPW Card Type Modem Chip Set Unidentified I/O Options Line in, line out, microphone in, speaker out Maximum Modem Rate 33.6Kbps Maximum Fax Rate 14.4Kbps Data Modulation Protocol Bell 103/212A ITU-T V.22, V.22bis, V.32ter, V.32bis, V.34 Fax Modulation Protocol ITU-T V.17, V.27ter, V.29 Error Correction/Compression MNP5, V.42, V.42bis Fax Class Class I Data Bus 16-bit ISA [Image] CONNECTIONS Function Label Function Label Line out (RJ-11) CN1 Speaker out CN3 Line in (RJ-11) CN2 Microphone in CN4 SUPPORTED COMMAND SET Basic AT Commands AT, ‘+++’, A/ A, C, E, F, H, M, Q, W, Y &C, &F, &G, &V, &Z Extended AT Commands \V Special Commands -C S Registers S0, S1, S2, S3, S4, S5, S10 Note: See MHI Help File for full command documentation. Proprietary AT Command Set AUTO-MODE DETECTION Type: Configuration Format: AT [cmds] Nn [cmds] Description: Selects various options for the automatic detection and negotiation of protocols during the handshake process if the modem is communicating with a remote modem of dissimilar speed. Command Function N0 In originate mode, handshake begins at line speed designated by the S37 register and the B command N1 In originate mode, handshake begins at line speed designated by the S37 register. and the B command Modem can shift to a slower speed if necessary. AUXILLARY RELAY CONTROL Type: Configuration Format: AT [cmds] &J [cmds] Description: Controls auxiliary relay Command Function &J0 Auxiliary relay remains open COMMUNICATION PROTOCOLS Type: Configuration Format: AT [cmds] Bn [cmds] Description: Selects the communication protocol for data calls Command Protocol B0 Modem will use ITU-T V.22 at 1200bps. B1 Modem will use Bell 212A at 1200bps. B2 ITU-T V.23 reverse channel disabled B3 ITU-T V.23 reverse channel disabled B15 Modem will use ITU-T V.21 at 300bps. B16 Modem will use Bell 103J at 300bps. COMMUNICATIONS MODE Type: Configuration Format: AT [cmds] &Mn [cmds] Description: Selects communications mode Command Mode &M0 Asynchronous mode COMMUNICATIONS MODE Type: Configuration Format: AT [cmds] &Qn [cmds] Description: Selects communications mode options Command Mode &Q0 Asynchronous mode, serial port speed follows connect speed. &Q5 Error correction mode &Q6 Buffered asynchronous mode DATA SET READY (DSR) Type: Configuration Format: AT [cmds] &Sn [cmds] Description: Selects DSR options Command Function &S0 DSR forced high &S1 DSR high only while modem is connected DATA TERMINAL READY (DTR) Type: Configuration Format: AT [cmds] &Dn [cmds] Description: Selects modem response to DTR Command Function &D0 Modem does not respond to DTR &D1 Modem goes to command mode after DTR goes is off &D2 Modem goes to command mode and disconnects (hangs up) after DTR goes off; Auto-Answer is disabled. &D3 Modem is initialized after DTR goes off DIAL Type: Immediate Format: AT [cmds] D<#> [cmds] Description: Dials telephone number according to any modifiers included in the string Note: Any combination of modifiers can be used to produce the desired dial functions in sequence. Command Function DL Re-dial last number DP Pulse dialing enabled DSn Dial stored telephone number n DT Tone dialing enabled/Pulse dialing disabled DW Dialing resumed following dial tone detection D, Dialing paused for amount of time specified in S8 register D! Flash function initiated. Modem commanded to go off-hook for specified time before returning on-hook. D@ Wait for quiet Answer function enabled. Modem waits until a "quiet answer," a ring-back signal followed by silence up to the time specified in S7, is received prior to executing the rest of the dial string. D; Modem returned to idle state after dialing. The semicolon can only be placed at the end of the dial command. DV Switch to speakerphone D^ Data calling tone transmission disabled FLOW CONTROL Type: Configuration Format: AT [cmds] &Kn [cmds] Description: Enables flow control options Command Function &K0 Flow control disabled &K3 RTS/CTS flow control enabled &K4 XON/XOFF flow control enabled ON-LINE Type: Immediate Format: AT [cmds] On Description: Instructs the modem to return to on-line state. Command Function O0 Return to on-line state. O1 Return to on-line state and initiate retrain sequence. O3 Return to on-line state and initiate renegotiation sequence. REPORT INFORMATION Type: Immediate Format: AT [cmds] In [cmds] Description: Displays information requested Command Function I0 Reports default speed and controller firmware code I1 Reports ROM checksum I2 Tests and reports ROM checksum I3 Reports default speed and controller firmware code I4 Reports data pump model and revision code I9 Reports country code RESTORE PROFILE ON POWER-UP Type: Configuration Format: AT [cmds] &Yn [cmds] Description: Restores a selected profile into the active profile on power-up (hard reset) Command Function &Y0 Restore profile 0 on power-up SELECT CALL PROGRESS RESULT CODES Type: Configuration Format: AT [cmds] Xn [cmds] Description: Enables selection of tone detection and associated result code format options Command Function X0 Busy and dial tone detection disabled; basic result codes enabled. X1 Busy and dial tone detection disabled; extended result codes enabled. X2 Busy tone detection disabled, dial tone detection enabled; extended result codes enabled. X3 Busy tone detection enabled, dial tone detection disabled; extended result codes enabled. X4 Busy and dial tone detection disabled; extended result codes enabled. X5 Busy and dial tone detection disabled; extended result codes enabled. X6 Busy and dial tone detection disabled; extended result codes enabled. X7 Busy and dial tone detection disabled; basic result codes enabled. SOFT RESET Type: Immediate Format: AT [cmds] Zn [cmds] Description: Restores modem profiles previously saved in non-volatile RAM using the &W command. Command Function Z0 Restore modem to profile saved by last &W command Z1 Restore modem to profile saved by last &W command SPEAKER VOLUME Type: Configuration Format: AT [cmds] Ln [cmds] Description: Controls speaker volume Command Function L0 Low volume setting L1 Low volume setting L2 Medium volume setting L3 Highest volume setting STORE ACTIVE PROFILE Type: Configuration Format: AT [cmds] &Wn [cmds] Description: Writes the values for the active profile into the non-volatile RAM Command Function &W0 Write the active profile to NVRAM TEST MODES Type: Immediate Format: AT [cmds] &Tn Description: Selects test options Command Function &T0 End current test &T1 Begin local analog loopback test &T3 Begin local digital loopback &T6 Request remote digital loopback V.32 - AUTO-RETRAIN Type: Configuration Format: AT [cmds] &Bn [cmds] Description: Controls auto-retrain function if poor line quality is detected Command Function &B1 Auto-retrain enabled if line quality is poor Extended AT Commands BREAK TYPE Type: Configuration Format: AT [cmds] \Kn [cmds] Description: Configures action of break signal Command Function \K5 Sends break received from DTE to the remote modem COMPRESSION Type: Configuration Format: AT [cmds] %Cn [cmds] Description: Selects data compression Command Function %C0 Data compression disabled %C1 V.42bis/MNP5 enabled CONNECT MODE Type: Configuration Format: AT [cmds] \Nn [cmds] Description: Controls the type of connection the modem will operate in Command Function \N0 Normal mode enabled \N1 Direct mode enabled \N2 MNP reliable mode enabled \N3 V.42/MNP auto-reliable mode enabled \N4 V.42 reliable mode enabled \N5 V.42/MNP auto-reliable mode enabled \N7 V.42/MNP auto-reliable mode enabled DISPLAY BLACKLIST NUMBERS Type: Immediate Format: AT [cmds] %B [cmds] Description: Displays the list of all the numbers on the blacklist. Returns ERROR if blacklisting is disabled. FLOW CONTROL Type: Configuration Format: AT [cmds] \Gn [cmds] Description: Command nonfunctional; for compatibility purposes only Command Function \G0 Returns OK for backward compatibility FLOW CONTROL TYPE Type: Configuration Format: AT [cmds] \Qn [cmds] Description: Sets type of flow control used by modem Command Function \Q0 Flow control disabled \Q1 Bi-directional XON/XOFF flow control enabled \Q3 Bi-directional RTS/CTS flow control enabled INACTIVITY TIMER Type: Configuration Format: AT [cmds] \Tn [cmds] Description: Disables the inactivity timer Command Function \T0 Inactivity timer disabled LOCK SERIAL PORT Type: Configuration Format: AT [cmds] \Jn [cmds] Description: Sets operation of serial port speed Command Function \J0 Serial speed locked XON/XOFF PASS-THROUGH Type: Configuration Format: AT [cmds] \Xn [cmds] Description: Selects whether XON/XOFF signals are sent to remote modem Command Function \X0 XON/XOFF signals trapped by local modem Special Commands ASYNCHRONOUS WORD LENGTH Type: Configuration Format: AT [cmds] +ES=n [cmds] Description: Allows an H.324 video application direct access to the synchronous data channel. +ES=? Shows allowable value (6) +ES? Queries setting Command Function +ES=6 Allows an H.324 video application direct access to the synchronous data channel SPEAKER CODEC LOOPBACK Type: Configuration Format: AT [cmds] &&S [cmds] Description: Provides a loopback from the microphone to the speaker. Note: For testing and debugginh purposes only S(STATUS) -REGISTERS DCE LINE SPEED Type: Register Format AT [cmds] S37=n [cmds] Description: Sets the maximum allowable data exchange rate attempted during handshake process. Command Function S37=0 Maximum speed S37=1 Reserved S37=2 1200/75bps S37=3 300bps S37=4 Reserved S37=5 1200bps S37=6 2400bps S37=7 4800bps S37=8 7200bps S37=9 9600bps S37=10 12.0Kbps S37=11 14.4Kbps S37=12 16.8Kbps S37=13 19.2Kbps S37=14 21.6Kbps S37=15 24.0Kbps S37=16 26.4Kbps S37=17 28.8Kbps S37=18 31.2Kbps S37=19 33.6Kbps DIALING DELAY Type: Register Format AT [cmds] S6=n [cmds] Range: 2-65 Unit: 1 second Description: Duration of delay after modem goes off-hook and before dialing INACTIVITY TIMER Type: Register Format: AT [cmds] S89=n [cmds] Range: 0, 5-255 Default: 10 Unit: 1 second Description: Sets the length of time that the modem does not receive information before it disconnects; S89=0 will disable. NO CARRIER TIME-OUT Type: Register Format AT [cmds] S7=n [cmds] Range: 1-255 Unit: 1 second Description: Maximum wait time the modem uses after dialing to detect a carrier signal from the remote modem for both originating and answering calls. PAUSE DURATION Type: Register Format AT [cmds] S8=n [cmds] Range: 0-65 Unit: 1 second Description: Duration of pause per comma (,) command used in a command or dial string TONE PULSE DURATION Type: Register Format AT [cmds] S11=n [cmds] Range: 50-150 Unit: 1 ms Description: DTMF tone pulse duration and time between tone pulses for tone dialing operations. V.25 CALLING TONE Type: Register Format AT [cmds] S35=n [cmds] Range: 0-1 Unit: Decimal Description: Enables V.25 data calling tone, which allows remote data/fax/voice discrimination Note: S35=0 disables V.25 data calling tone. V.34 MODULATION Type: Register Format AT [cmds] S28=n [cmds] Range: 0-255 Unit: Decimal Description: Enables V.34 modulation Note: S28=0 disables V.34 modulation. V32bis STARTUP MODE Type: Register Format AT [cmds] S43=n [cmds] Range: 0-1 Unit: Decimal Description: Enables V.32bis start-up auto mode operation Note: S43=0 disables V.32bis start-up auto mode. For testing purposes only. V32bis, V.22bis AUTO RATE Type: Register Format AT [cmds] S42=n [cmds] Range: 0-1 Unit: Decimal Description: Enables V.32bis and V.22bis auto rate Note: S42=0 disables V.32bis and V.22bis auto rate. For testing purposes only.