MULTI-TECH SYSTEMS, INC. MT932EAI Card Type Modem (synchronous/asynchronous) Chip Set Unidentified Maximum Data Rate 9600bps Data Bus External Data Modulation Protocol Bell 103/212A ITU-T V.21, V.22, V.22bis, V.23, V.25bis, V.32 Error Correction/Compression MNP5, V.42, V.42bis [Image] CONNECTIONS Function Label Function Label DC power CN1 Volume R1 RS-232/422 CN2 Power switch SW1 Line out CN3 Speed switch SW2 Line in CN4 Voice/data switch SW3 USER CONFIGURABLE SETTINGS Setting Label Position CTS normal SW4/A Off CTS forced high SW4/A On Dial-up line SW4/B On Leased line SW4/B Off External clock (Synchronous mode) SW4/C Off Multi-Tech response code (Asynchronous mode) Internal clock (Synchronous mode) SW4/C On Hayes response code (Asynchronous mode) Asynchronous mode SW4/D Off Synchronous mode SW4/D On DTR forced high SW5/A On DTR normal SW5/A Off Verbose result code (Asynchronous mode) SW5/B On Analog loopback test enabled when SW4/B is on (Synchronous mode) Numeric result code (Asynchronous mode) SW5/B Off Analog loopback test disabled when SW4/B is off (Synchronous mode) Result code sending enabled (Asynchronous mode) SW5/C Off Remote loopback test enabled (Synchronous mode) Result code sending disabled (Asynchronous mode) SW5/C On Remote loopback test disabled (Synchronous mode) Local echo enabled (Asynchronous mode) SW5/D On Local Digital loopback test enabled (Synchronous mode) Local echo disabled (Asynchronous mode) SW5/D Off Local Digital loopback test disabled (Synchronous mode) Auto-answer enabled (Dial-up mode) SW5/E On Answer mode (Leased line mode) Auto-answer disabled (Dial-up mode) SW5/E Off Originate mode (Leased line mode) CD/DSR signals normal SW5/F On CD/DSR signals forced high SW5/F Off RTS forced high SW5/G Off RTS normal SW5/G On Smart mode SW5/H Off Dumb mode SW5/H On DIAL-UP/LEASE LINE Setting JP4 Dial-up Pins 3 & 5, 4 & 6 closed Lease line Pins 1 & 3, 2 & 4 closed DSR Setting JP3 DSR follows CD Pins 1 & 2 closed DSR follows off-hook Pins 2 & 3 closed MI/MIC Setting JP5 MI/MIC disabled Pins 3 & 5, 4 & 6 closed MI/MIC enabled Pins 1 & 3, 2 & 4 closed RTS/CTS Setting JP2 CTS follows RTS Pins 1 & 2 closed CTS forced high Pins 2 & 3 closed SDLC/BSC Setting JP1 SDLC Pins 1 & 2 closed BSC Pins 2 & 3 closed DIAGNOSTIC LED(S) LED Color Status Condition SD Red On Modem is transmitting data SD Red Off Modem is not transmitting data RD Red On Modem is receiving data RD Red Off Modem is not receiving data CD Red On Carrier signal detected CD Red Off Carrier signal not detected CD Red Blinking Modem is retraining 96 Red On Modem connected at 9600bps 96 Red Off Modem not connected at 9600bps 24 Red On Modem connected at 24Kbps 24 Red Off Modem not connected at 24Kbps 12 Red On Modem connected at 1200bps 12 Red Off Modem not connected at 1200bps OH Red On Modem is off-hook OH Red Off Modem is on-hook TR Red On DTR signal is high TR Red Off DTR signal is low Note: If LED 96, 24, and 12 are on the modem is connected at 300bps. If LED 96 and 24 are on the modem is connected at 4800bps. If LED 96, 24, or 12 are blinking 3 times a second then V.42 is enabled at that speed. If LED 96, 24, or 12 are blinking 1 time a second then data compression is enabled at that speed. Proprietary AT Command Set ATTENTION Type: Immediate Format: AT [cmds] Description: Tells the modem that a command follows ANSWER Type: Immediate Format: AT [cmds] A Description: Enables answer mode, the modem goes off-hook REPEAT PREVIOUS COMMAND Type: Immediate Format: A/ Description: Repeats previous command Note: Do not precede this command with AT, or follow it with REDIAL Type: Immediate Format: A: Description: Redials the last number dialed until it is no longer busy or 10 attempts are made Note: Do not precede this command with AT or follow it with AUTO-RELIABLE TIME BUFFER CONFIGURATION Type: Configuration Format: AT [cmds] $An [cmds] Description: Controls the handling of incoming data during auto-reliable time period Command Function $A0 Data is discarded $A1 Data is buffered HANDSHAKE ATTEMPTS Type: Configuration Format: AT [cmds] #An [cmds] Description: Configures the initial handshake phase. Command Function #A0 Attempts in order: 9600bps, 4800bps, 2400bps, 1200bps and 300bps #A1 Attempts in order: 9600bps, 2400bps, 1200bps and 300bps #A2 Attempts V.32 connection in order: 9600bps and 4800bps #A3 Attempts V.22 connection in order: 2400bps, 1200bps and 300bps BLIND DIALING Type: Configuration Format: AT [cmds] Bn [cmds] Description: Selects blind dial or wait-for-dial-tone Note: Use with AT&Q0 and AT&Q2 Command Function B0 Modem will blind dial (Default for MT932EA) B1 Modem will wait for dial tone before dialing ANSWER TONE Type: Configuration Format: AT [cmds] Bn [cmds] Description: Selects the answer tone used for data calls Note: Use with AT&Q1 and AT&Q3 Command Protocol B0 ITU-T answer tone (Default for MT932EA) B1 Bell answer tone BUFFER SIZE Type: Configuration Format: AT [cmds] &Bn [cmds] Description: Selects the modem’s transmit/receive buffer size Command Function &B0 Normal buffer size &B1 Small buffer size MAXIMUM BLOCK SIZE FOR TRANSMISSION Type: Configuration Format: AT [cmds] &BSn [cmds] Description: Sets the maximum transmittable block size Command Function &BS0 Maximum block size is 64 characters &BS1 Maximum block size is 256 characters LOCK SERIAL PORT Type: Configuration Format: AT [cmds] $BAn [cmds] Description: Sets operation of serial port speed Command Function $BA0 Serial speed locked at rate set by $SB $BA1 Serial speed follows connect speed ignoring $SB CD SIGNAL Type: Configuration Format: AT [cmds] &Cn [cmds] Description: Configures the behavior of the carrier detect signal Command Function &C0 CD forced high &C1 CD normal &C2 CD forced high except during disconnect 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. The maximum characters that can be use is 60 including modifiers. Modifier Function P Pulse dialing enabled R Answer mode enabled originate mode disabled following handshake initiation T Tone dialing enabled W Dialing resumed following dial tone detection , Dialing paused for amount of time specified in S8 register ! Flash function initiated. Modem commanded to go off-hook for half a second before returning on-hook. @ 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. ; Modem returned to command state after dialing. The semicolon can only be placed at the end of the dial command. STORE PHONE NUMBER Type: Configuration Format: AT [cmds] D<#>Nn Example: ATD5551212N1 Description: Stores a phone number in the modem’s memory (n=0-9) 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 DTR DIALING Type: Configuration Format: AT [cmds] $Dn [cmds] Description: Selects the DTR dialing function Command Function $D0 DTR dialing disabled $D1 DTR dialing enabled ECHO Type: Configuration Format: AT [cmds] En [cmds] Description: Enables modem to echo commands received from the DTE Command Function E0 Echo function disabled E1 Echo function enabled V.42 MODE Type: Configuration Format: AT [cmds] &En [cmds] Description: Configures the operation of V.42 mode Command Function &E0 Error correction disabled normal mode enabled &E1 V.42 set to auto-reliable mode &E2 V.42 set to reliable mode FLOW CONTROL TYPE Type: Configuration Format: AT [cmds] &En [cmds] Description: Sets type of flow control used by modem Command Function &E3 Flow control disabled &E4 CTS/RTS flow control enabled &E5 XON/XOFF flow control enabled XON/XOFF PASS-THROUGH Type: Configuration Format: AT [cmds] &En [cmds] Description: Selects whether XON/XOFF signals are sent to remote modem Command Function &E6 XON/XOFF signals trapped by local modem &E7 XON/XOFF passed through local modem FLOW CONTROL - ENQ/ACK Type: Configuration Format: AT [cmds] &En [cmds] Description: Selects ENQ/ACK pacing Command Function &E8 Enables ENQ/ACK pacing &E9 Disables ENQ/ACK pacing FLOW CONTROL IN NORMAL MODE Type: Configuration Format: AT [cmds] &En [cmds] Description: Selects XON/XOFF flow control for non-error-correcting connections Command Function &E10 XON/XOFF disabled for non-error-correcting connections &E11 XON/XOFF enabled for non-error-correcting connections FLOW CONTROL Type: Configuration Format: AT [cmds] &En [cmds] Description: Selects flow control Command Function &E12 Flow control disabled &E13 Flow control enabled COMPRESSION Type: Configuration Format: AT [cmds] &En [cmds] Description: Selects data compression Command Function &E14 Data compression disabled &E15 Data compression enabled ASYNCHRONOUS FORMAT Type: Configuration Format: AT [cmds] $EBn [cmds] Description: Selects 10- or 11-bits for asynchronous mode Command Function $EB0 Sets 10-bit asynchronous format $EB1 Sets 11-bit asynchronous format FALLBACK Type: Configuration Format: AT [cmds] #Fn [cmds] Description: Controls fallback Command Function #F0 Fallback disabled #F1 Fallback from 9600bps to 4800bps as line quality degrades FACTORY DEFAULTS Type: Immediate Format: AT [cmds] &F [cmds] Description: Loads factory defaults from ROM and DIP switches settings AUTO-RELIABLE FALLBACK CHARACTER Type: Configuration Format: AT [cmds] $Fn [cmds] Description: Controls whether the modem will react to while in auto-reliable mode Note: In auto-reliable mode the modem is given 4 seconds to make a connection in reliable mode, if is received during the 4 seconds the modem will establish a connection in normal mode. Command Function $F0 Establish a connection using error correction $F1 Switch to normal mode on receipt of GUARD TONE Type: Configuration Format: AT [cmds] &Gn [cmds] Description: Commands the modem to transmit a guard tone in V.22/V.22bis Note: Used primarily for international data transmission Command Function &G0 Guard tone disabled &G1 550Hz guard tone enabled &G2 1800Hz guard tone enabled HELP SCREENS Type: Immediate Format: AT $Hn Description: Displays modem help screens Command Function $H1 Displays help screen 1 $H2 Displays help screen 2 $H3 Displays help screen 3 REPORT INFORMATION Type: Immediate Format: AT [cmds] In [cmds] Description: Displays information requested Command Function I0 Reports modem ID number I1 Reports firmware revision number LISTS Type: Immediate Format: AT [cmds] Ln [cmds] Description: Displays requested lists Command Function L Displays all phone numbers stored in memory L5 Display current operating parameters L6 Displays current S-register settings L7 Displays additional parameters COMPRESSION MODE Type: Configuration Format: AT [cmds] #Ln [cmds] Description: Selects active compression protocols Command Function #L0 LAP-M/MNP negotiation enabled (default for MT932EAI) #L1 MNP negotiation only enabled #L2 LAP-M negotiation only enabled #L3 LAP-M enabled, no negotiation COMMUNICATIONS MODE Type: Configuration Format: AT [cmds] &Mn [cmds] Description: Selects communications mode Command Mode &M0 Asynchronous mode when on-line &M1 Synchronous mode when on-line CONNECT SPEED Type: Configuration Format: AT $MBnnn Description: Sets maximum connect speed Command Function $MB75 Sets V.23 mode (1200bps/75bps bi-directional) $MB300 Sets 300bps connect $MB1200 Sets 1200bps connect $MB2400 Sets 2400bps connect $MB4800 Sets 4800bps connect $MB9600 Sets 9600bps connect MI/MIC Type: Configuration Format: AT [cmds] $MIn [cmds] Description: Controls MI/MIC option Command Function $MI0 MI/MIC option disabled $MI1 MI/MIC option enabled DIAL STORED PHONE NUMBER Type: Immediate Format: AT [cmds] Nn Description: Dials stored phone number n. (n=0-9) DIAL STORED PHONE NUMBER - LINKED Type: Immediate Format: AT [cmds] NxNy Description: Dials stored phone number x (x=0-9). If the number is busy (x), the modem will proceed to the next number selected (y) (y=0-9). RESULT CODES Type: Configuration Format: AT &Qn Description: Selects standard Hayes or Multi-Tech result code sets with ATXn command Command Function &Q0 Multi-Tech result codes/Blind dialing (ATBn) enabled, use ATX0-1 &Q1 Standard Hayes result codes/Answer tone selection (ATBn) enabled, use ATX2-4 &Q2 Multi-Tech result codes enabled/Blind dialing (ATBn) enabled, use ATX2-4 &Q3 Multi-Tech result codes/Answer tone selection (ATBn) enabled, use ATX2-4 RETRANSMIT FAIL ACTION Type: Configuration Format: AT [cmds] $Rn [cmds] Description: Controls whether the modem gives up on a bad connection Command Function $R0 Hang up after 12 failed retransmission’s $R1 Do not hang up after 12 failed retransmission’s STATUS-REGISTER Type: Configuration Format: Read: AT [cmds] Sn? [cmds] Write: AT [cmds] Sn=x [cmds] Description: Writes to or reads from a specified register Note: (n=0-16, 18, 24, 25), (x=decimal format); when reading the value of a register it is shown in a 3-digit decimal format. LOCAL SERIAL PORT SPEED Type: Configuration Format: AT [cmds] $SBnnn [cmds] Description: Sets serial port speed Command Function $SB300 Sets 300bps speed $SB1200 Sets 1200bps speed $SB2400 Sets 2400bps speed $SB4800 Sets 4800bps speed $SB9600 Sets 9600bps speed $SB19200 Sets 19.2Kbps speed SPEED SWITCH Type: Configuration Format: AT [cmds] %Sn [cmds] Description: Sets the speed switch setting Command Function %S0 Speed switch set to 9600/1200/2400bps %S1 Speed switch set to 9600/4800/2400bps TEST MODES Type: Immediate Format: AT [cmds] &Tn Description: Selects test options Command Function &T4 Grant remote digital loopback request &T5 Deny remote digital loopback request TRELLIS MODULATION Type: Configuration Format: AT [cmds] #Tn [cmds] Description: Controls Trellis Coded Modulation Command Function #T0 Disables TCM #T1 Enables TCM LOOPBACK TEST MODE Type: Configuration Format: AT [cmds] Un [cmds] Description: Performs test modes Command Function U0 Begin local analog loopback test in originate mode U1 Begin local analog loopback test in answer mode U2 Request remote digital loopback U3 Begin local digital loopback DIALING MODE Type: Configuration Format: AT [cmds] $VDn [cmds] Description: Selects voice/data mode dialing Command Function $VD0 Disables voice/data mode $VD1 Enables voice/data mode STORE ACTIVE PROFILE Type: Configuration Format: AT [cmds] &Wn [cmds] Description: Writes the parameters for the active profile into the non-volatile RAM Command Function &W0 Parameters stored in NVRAM &W1 Parameters not stored in NVRAM 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; result codes 0 - 4 enabled. X1 Busy and dial tone detection disabled; result codes 0 - 5 & 10 enabled. X2 Busy tone detection disabled, dial tone detection enabled; result codes 0 - 6 & 10 enabled. X3 Busy tone detection enabled, dial tone detection disabled; result codes 0 - 5, 7 & 10 enabled. X4 Busy and dial tone detection enabled; result codes 0 - 7 & 10 enabled. CLOCK SOURCE - SYNCHRONOUS TRANSMIT Type: Configuration Format: AT [cmds] &Xn [cmds] Description: Selects DTE transmit clock source Command Function &X0 Modem generates clock &X1 DTE generates clock &X2 Modem generates clock from the receive carrier signal BREAK TIME Type: Configuration Format: AT [cmds] S17=n [cmds] Default: 25 Range: 0-255 Unit: .01 second Description: Sets break time to DTE DSR/CTS/CD TIMEOUT Type: Register Format: AT [cmds] S24=n [cmds] Default: 20 Range: 0-255 Unit: .05 second Description: Sets the time to drop the DSR, CTS, and CD signals to hang-up DTR TIMEOUT Type: Register Format: AT [cmds] S25=n [cmds] Default: 0 Range: 0-255 Unit: .1 second Description: Sets the time to drop the DTR signal to hang-up Note: Setting S25 to 0 sets the DTR time-out to .05 second INACTIVITY TIMER Type: Register Format AT [cmds] S30=n [cmds] Default: 0 Range: 0-255 Unit: 1 minute Description: Maximum duration of DTE and DCE inactivity allowed prior to initiating hang-up process. Note: S30=0 will disable the timer Proprietary V.25bis Command Set CLEAR MEMORY LOCATION Type: Immediate Format: CLAn Description: Clears the phone number in memory location n. LOCAL SERIAL PORT SPEED Type: Configuration Format: CSPn Description: Sets serial port speed Command Function CSP300 Sets 300bps speed CSP1200 Sets 1200bps speed CSP2400 Sets 2400bps speed CSP4800 Sets 4800bps speed CSP9600 Sets 9600bps speed CSP19200 Sets 19.2Kbps speed CSP38400 Sets 38.4Kbps speed REQUEST LISTED NUMBERS Type: Immediate Format: RLN Description: Requests the modem to return the list of stored numbers CONNECT INCOMING CALLS Type: Immediate Format: CIC Description: Instructs the modem to answer an incoming call; if no call is currently incoming, a result of INV will be returned. DISREGARD INCOMING CALL Type: Immediate Format: DIC Description: Instructs the modem to ignore the incoming call, if the modem is set to automatically answer. If no call is currently incoming, a result of INV will be returned. CALL REQUESTED NUMBER Type: Immediate Format: CRN<#> Description: Dials the number given; it will ignore spaces and hyphens in the string; if the string is more than twenty characters long, a result of INV will be returned. CALL REQUEST WITH ADDRESS Type: Immediate Format: CRSn Description: Dials the number stored in memory n after checking the forbidden and delayed lists PROGRAM NUMBER Type: Configuration Format: PRNn<#> Description: Stores a phone number in memory address n; if the number is more than twenty characters long, a result of INV will be returned. REQUEST LIST OF DELAYED NUMBERS Type: Immediate Format: RLD Description: Requests the list of delayed numbers from the modem; this is a list of numbers that the modem attempted to call and failed, and is not allowed to call again until a set amount of time has elapsed; this is usually to prevent repeated dialing of a number (which could indicate an attempted security breach.) If this feature is not enabled, the modem will return INV. REQUEST LIST OF FORBIDDEN NUMBERS Type: Immediate Format: RLF Description: Requests the list of forbidden numbers; the modem is unable to dial numbers on this list until it has been reset(power off/on); if this feature is not enabled, the modem will return INV. V.25BIS COMMAND SET RESULT CODES CALL FAILURE INDICATOR Type: Response Format: CFIxx Description: Indicates that the attempt to connect failed Response Name Description CFIET Engaged Tone A busy signal was detected CFIAB Abort The call was aborted because no dialtone was detected CFINT No Tone The remote party did not issue a response tone CFIFC Forbidden Call The number given is on the forbidden list CFINS Not Stored The phone number given wasn’t in memory CFIUA User Abort The user aborted the call using a character from the host computer CFIND Dial Tone A dial tone was not detected CFIFF Forbidden list The forbidden list is full INCOMING CALL Type: Response Format: INC Description: An incoming call has been detected VALID Type: Response Format: VAL Description: The command issued is valid and is being executed INVALID Type: Response Format: INV Description: The modem was issued an improper command DELAYED CALL Type: Response Format: DLCn Description: The telephone number given is on the delayed call list; the call cannot be completed until n minutes elapse. CONNECTION Type: Response Format: CONn Description: A connection has been successfully established at the speed n LIST OF STORED NUMBERS Type: Response Format: LSNn<#> Description: This code is given in response to a RLN command; it indicates that the number is in V.25bis memory. LIST OF STORED DELAYED NUMBERS Type: Response Format: LSDn<#> Description: This code is given in response to a RLD command; it indicates that the number cannot be redialed for n minutes. LIST OF STORED FORBIDDEN NUMBERS Type: Response Format: LSFn<#> Description: This code is given in response to a RLF command; it indicates that the number is on the forbidden list and cannot be dialed.