TELEBIT CORPORATION T1500 Card Type Modem (synchronous/asynchronous) Chipset Unidentified Maximum Data Rate 9600bps Data Bus Serial Data Modulation Bell 103A/212A ITU-T V.22, V.22bis, V.32 Error Correction/Compression MNP5 [Image] CONNECTIONS Function Label Function Label Line out CN1 Power switch SW1 Line in CN2 Talk/Data switch SW2 RS-232 port CN3 User profile 0/1 switch SW3 DC power in CN4 MI/MIC OR A/A1 SELECTION Setting E6 E7 MI/MIC mode Pins 1 & 2 closed Pins 1 & 2 closed A/A1 mode Pins 2 & 3 closed Pins 2 & 3 closed TRANSMISSION LEVEL SELECTION Setting R51 0 dBm 20K ohm -1 dBm 22.6K ohm -2 dBm 24.9K ohm -3 dBm 28K ohm -4 dBm 31.6K ohm -5 dBm 35.7K ohm -6 dBm 40.2K ohm -7 dBm 44.2K ohm -8 dBm 49.9K ohm -9 dBm 56.2K ohm -10 dBm 63.4K ohm -11 dBm 71.5K ohm -12 dBm 78.7K ohm -13 dBm 88.7K ohm -14 dBm 100K ohm -15 dBm 113K ohm Note: Manufacturer suggests using a resistor with a 1% tolerance. For this resistor to take effect, register S102 must not be set to a programmable mode. DIAGNOSTIC LED(S) (MODE SELECTION) CD MR Condition Off On Modem is indicating asynchronous extended command mode Off Blinking User has selected asynchronous extended command mode On Off Modem is indicating asynchronous standard command mode Blinking Off User has selected asynchronous standard command mode On On Modem is indicating synchronous V.32 mode Blinking Blinking User has selected synchronous V.32 mode Note: To enter mode selection, hold down SW2 while powering the modem on. Pressing SW2 briefly cycles through modes, and holding SW2 down for at least two seconds selects the current mode. DIAGNOSTIC LED(S) (NORMAL OPERATION) LED Color Status Condition CD Unidentified On Carrier signal detected CD Unidentified Off Carrier signal not detected OH Unidentified On Modem is off-hook OH Unidentified Off Modem is on-hook RD Unidentified On Modem is receiving data RD Unidentified Off Modem is not receiving data SD Unidentified On Modem is transmitting data SD Unidentified Off Modem is not transmitting data CTS Unidentified On CTS signal is high CTS Unidentified Off CTS signal is low DTR Unidentified On DTR signal is high DTR Unidentified Off DTR signal is low MR Unidentified On Power is on MR Unidentified Off Power is off SUPPORTED STANDARD COMMANDS (STANDARD MODE) Basic AT Commands +++, ‘comma’, A/ A, B, D, E, F, H, I, L, M, N, O, Q, V, W, X, Y, Z &C, &D, &F, &G, &J, &K, &L, &M, &P, &Q, &R, &S, &T, &V, &W, &X, &Y, &Z S-Registers S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S25, S26, S36, S37, S38 SUPPORTED STANDARD COMMANDS (ENHANCED MODE) Basic AT Commands +++, ‘comma’, A/ A, C, E, F, H, M, O, V, W, Y &P, &T S-Registers S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S25, S26, S38 Note: See MHI documentation for complete information. Proprietary AT Command Set (Standard Mode) ENHANCED MODE COMMAND Type: Special Format: AT ~[cmd] Example: AT ~I4 &X1 ~S150=2 Description: The command immediately following the ~ character will be executed as an enhanced mode command. No other commands on the command line will be affected. Note: This character may be changed by register S222. Proprietary AT Command Set (Enhanced Mode) ANSWER/ORIGINATE MODE Type: Register Format: AT [cmds] S100=n [cmds] Description: Selects whether the modem answers and originates calls normally or in the reverse mode. Command Function S100=0 Modem answers calls in answer mode and originates calls in originate mode. S100=1 Modem answers calls in originate mode and originates calls in answer mode. ASYNC/SYNC MODE Type: Register Format: AT [cmds] S150=n [cmds] Description: Selects the operating mode of the modem. Command Function S150=0 Modem will operate in asynchronous mode. S150=2 Modem will operate in synchronous mode. The RS-232 secondary transmit/receive pair may be used to connect a command terminal to enter commands and receive result codes. S150=3 Modem will operate in asynchronous mode will in command mode, and synchronous while in connect mode. AUTO-CONNECT Type: Register Format: AT [cmds] S101=n [cmds] Description: Selects whether the modem will attempt to connect automatically when no carrier is detected even when no call has been made or received. Command Function S101=0 Modem does not attempt to auto-connect. S101=1 Modem attempts to connect in answer mode every 20 seconds. S101=2 Modem attempts to connect in originate mode every 20 seconds. S101=3 Modem attempts to connect in answer mode immediately after carrier is lost, then pauses 20 seconds before retrying. S101=4 Modem attempts to connect in originate mode immediately after carrier is lost, then pauses 20 seconds before retrying. BREAK TYPE Type: Register Format: AT [cmds] S54=n [cmds] Description: Configures the modem’s reaction to a break signal. Command Function S54=0 Online command mode enabled, break not sent to remote modem. S54=3 Modem sends break in sequence when in data mode, and immediately when in command mode. S54=4 Break signal ignored. CD SIGNAL Type: Register Format: AT [cmds] S131=n [cmds] Description: Controls the behaviour of the CD signal. Command Function S131=0 CD forced high. S131=1 CD normal. S131=2 CD is brought high when modem is ready in command mode or is ready to accept data. S131=3 CD is brought high when modem is ready in command mode or is ready to accept incoming data. When modem disconnects, DSR is brought low for time specified by S47. S131=4 CD follows the inverse of CTS. CLOCK SOURCE Type: Register Format: AT [cmds] S154=n [cmds] Description: Selects where the modem derives the clock used in synchronous modes. Command Function S154=0 Modem uses internal clock source. S154=1 Modem uses external clock source. S154=2 Modem is a slave to received clock source. COMMAND SET Type: Immediate Format: AT [cmds] &B Description: Disables the AT command set. COMMAND SET TYPE Type: Register Format: AT [cmds] S63=n [cmds] Description: Selects whether the AT prefix is required in command mode, and which form of the AT command set will be used. Command Function S63=0 AT prefix not required and enhanced command set enabled. All characters entered in command mode will be assumed to be commands. S63=1 AT prefix required for command mode and enhanced command set enabled. S63=2 AT prefix required for command mode and standard command set enabled. CONNECT MODE Type: Register Format: AT [cmds] S95=n [cmds] Description: Selects the type of MNP mode connection that the modem will attempt to make. Command Function S95=0 Normal mode connection only. S95=1 MNP reliable mode connection only. S95=2 MNP auto-reliable mode connection. CTS SIGNAL Type: Register Format: AT [cmds] S67=n [cmds] Description: Controls the behaviour of the CTS signal. Command Function S67=0 CTS is forced high. S67=1 CTS follows RTS. When RTS goes high, there is a 200 mS delay before CTS follows. S67=2 CTS follows RTS. When RTS goes high, there is a delay specified by S26 before CTS follows. DATA COMPRESSION Type: Register Format: AT [cmds] S96=n [cmds] Description: Selects whether the modem will attempt to use MNP data compression. Command Function S96=0 Data compression disabled. S96=1 Data compression enabled. DIAL Type: Immediate Format: AT [cmds] D<#> [cmds] Description: Dials the telephone number indicated 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 DP Pulse dialing enabled. DR Answer mode enabled; originate mode disabled following handshake initiation. DNn Dial stored telephone number n. DT Tone dialing enabled. 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; Modem returned to idle state after dialing. The semicolon can only be placed at the end of the dial command. D\x\ Dials the stored telephone number with description x. DIAL INTERRUPT Type: Register Format: AT [cmds] S64=n [cmds] Description: Selects whether the modem will abort a dial, answer, or connect sequence if characters are received from the DTE. Command Function S64=0 Sequence aborted. S64=1 Sequence not aborted. DISPLAY CONFIGURATION Type: Immediate Format: AT [cmds] &Nn [cmds] Description: Displays the specified configuration stored in non-volatile RAM. Command Function &N0 Display profile specified by S255. &N1 Display profile 0. &N2 Display profile 1. DSR DELAY ON DISCONNECT Type: Register Format: AT [cmds] S47=n [cmds] Default: 4 Range: 0 - 255 Unit: 50 mS Description: Sets the time that DSR is forced low after disconnect. DSR SIGNAL Type: Register Format: AT [cmds] S130=n [cmds] Description: Controls the behaviour of the DSR signal. Command Function S130=0 DSR is forced high. S130=1 DSR is brought high when an answer tone is sent or received. S130=2 DSR is brought high when modem is ready in command mode or is ready to accept data. S130=3 DSR is brought high when modem is ready in command mode or is ready to accept data. When modem disconnects, DSR is brought low for time specified by S47. S130=4 DSR is brought high when modem goes off hook. S130=5 DSR follows remote carrier. S130=6 If modem is off line and DTR goes high, DSR will be brought high. If DTR is high and a connection is made, DSR will be brought high. If DTR goes low or carrier is lost, DSR will be brought low. DTR DIALING Type: Register Format: AT [cmds] S104=n [cmds] Description: Selects whether the modem will auto-dial the first stored number on DTR signal changes. Command Function S104=0 DTR dialing disabled. S104=1 Modem auto-dials stored number specified by the current configuration on low-to-high DTR change. S104=3 Modem auto-dials stored number specified by the current configuration when SW2 is pressed. S104=4 When DTR goes high, the modem will connect in answer mode if the value stored in register S1 is greater than that stored in S0. Otherwise, it will connect in originate mode. DTR SIGNAL Type: Register Format: AT [cmds] S52=n [cmds] Description: Controls the modem’s response to the DTR signal. Command Function S52=0 Modem assumes DTR is forced high. S52=1 Modem goes idle on low DTR. S52=2 Modem is reset on low DTR. S52=3 Modem enters command mode on low DTR. S52=4 Modem disconnects, disables auto-answer, and enters command mode on low DTR. EIGHTH BIT FILTER Type: Register Format: AT [cmds] S48=n [cmds] Description: Selects whether the high bit of a character is cleared before detection of XON, XOFF and escape characters. Command Function S48=0 Eighth bit is cleared. S48=1 Eighth bit is not cleared. ESCAPE SEQUENCE RESPONSE Type: Register Format: AT [cmds] S55=n [cmds] Description: Configures the modem’s reaction to an escape sequence. Command Function S55=0 Modem returns to command mode after set guard time has passed and escape characters sent to remote modem. S55=1 Buffers are cleared and escape characters sent to remote modem. S55=2 Escape characters sent to remote modem immediately. S55=3 Escape characters sent with transmitted data. ENHANCED MODE CHARACTER Type: Register Format: AT [cmds] S222=n [cmds] Default: 126 Range: 0 - 127 Unit: 1 ASCII character Description: Sets the character used in standard mode to execute enhanced mode commands. FACTORY DEFAULT PROFILE Type: Immediate Format: AT [cmds] &Fn [cmds] Description: Returns the command settings to the values found in one of the factory default profiles. Command Function &F0 Restores enhanced mode settings. &F1 Restores standard mode settings. &F3 Restores V.32 synchronous mode settings. FLOW CONTROL CHARACTER - XOFF Type: Register Format: AT [cmds] S57=n [cmds] Default: 19 Range: 0 - 255 Unit: ASCII Description: Sets the character used to represent the XOFF character. FLOW CONTROL CHARACTER - XON Type: Register Format: AT [cmds] S56=n [cmds] Default: 17 Range: 0 - 255 Unit: ASCII Description: Sets the character used to represent the XON character. FLOW CONTROL TYPE - DCE Type: Register Format: AT [cmds] S68=n [cmds] Description: Sets type of flow control used by the modem. Command Function S68=0 Flow control disabled. S68=2 Bidirectional RTS/CTS flow control enabled. S68=3 Bidirectional XON/XOFF flow control enabled. S68=4 Bidirectional XON/XOFF and RTS/CTS enabled. S68=5 Flow control disabled; ENQ/ACK characters sent to remote modem. S68=6 Bidirectional XON/XOFF enabled; ENQ/ACK characters sent to remote modem. S68=255 Use flow control specified in S58. FLOW CONTROL TYPE - DTE Type: Register Format: AT [cmds] S58=n [cmds] Description: Sets type of flow control used by the DTE. Command Function S58=0 Flow control disabled. S58=1 Unidirectional RTS flow control enabled. S58=2 Bidirectional RTS/CTS flow control enabled. S58=3 Bidirectional XON/XOFF flow control enabled. S58=4 Bidirectional XON/XOFF and RTS/CTS enabled. S58=5 Flow control disabled; ENQ/ACK characters sent to remote modem. S58=6 Bidirectional XON/XOFF enabled; ENQ/ACK characters sent to remote modem. S58=7 Transparent XON/XOFF enabled. FREQUENCY OFFSET Type: Read-only Format: AT [cmds] S77? [cmds] Description: Displays the frequency offset for the current connection. GUARD TONE Type: Register Format: AT [cmds] S91=n [cmds] Description: Commands the modem to transmit a guard tone in V.22/V.22bis mode. Command Function S91=0 Guard tone disabled. S91=1 1800Hz guard tone enabled. S91=2 550Hz guard tone enabled. INACTIVITY TIMER Type: Register Format: AT [cmds] S41=n [cmds] Default: 0 Range: 0-255 Unit: 1 minute Description: Sets the length of time that the modem does not receive information before it disconnects. LINE OUT PINS Format: AT [cmds] S102=n [cmds] Default: 0 Range: 0 - 6 Description: Selects the functions, if any, of pins 3 & 6 and 7 & 8 of the RJ-45 telephone line out jack. Bit Value Function 1, 0 00 Pins 3 & 6 have no function. 01 Pins 3 & 6 are A/A1 signals. 10 Pins 3 & 6 are MI/MIC signals. 2 0 Pins 7 & 8 have no function; modem is in permissive or normal transmission level. 1 Pins 7 & 8 are to set the programmable transmission level. LINE QUALITY Type: Read-only Format: AT [cmds] S78? [cmds] Default: N/A Range: 0 - 100 Unit: N/A Description: Displays the quality of the current connection. Larger numbers indicate a better connection. LOCAL SERIAL PORT SPEED Type: Register Format: AT [cmds] S51=n [cmds] Description: Selects the speed at which the modem will communicate with the host computer. Command Function S51=0 Set speed to 300bps. S51=1 Set speed to 1200bps. S51=2 Set speed to 2400bps. S51=3 Set speed to 4800bps. S51=4 Set speed to 9600bps. S51=5 Set speed to 19.2Kbps. S51=252 Auto-detect speed from received "A" or "a" character. User may not type new command until result code is displayed. S51=254 Auto-detect speed from received "A" or "a" character. This speed is used until disconnect, reset, or received break. User may type new command before result code is displayed. If no command has been entered since the modem has been powered on, assume next command will be at 19.2Kbps. S51=255 Auto-detect speed from received "A" or "a" character. This speed is used until disconnect, reset, or received break. User may type new command before result code is displayed. If no command has been entered since the modem has been powered on, assume next command will be at 9600bps. LOCK SERIAL PORT Type: Register Format: AT [cmds] S66=n [cmds] Description: Sets operation of serial port speed. Command Function S66=0 Serial port speed follows connect speed. S66=1 Serial port speed locked. S66=2 Serial port speed locked. Use flow control in connect mode but not in command mode. PRODUCT ID NUMBER Type: Register Format: AT [cmds] S49=n [cmds] Description: Selects what the modem will report as its product ID number. Command Function S49=0 Modem reports normal ID number. S49=1 Modem reports 123 as its ID number. S49=2 Modem reports 965 (TrailBlazer Plus) as its ID number. PROMPT CHARACTER Type: Register Format: AT [cmds] S59=n [cmds] Default: 0 Range: 0 - 255 Unit: 1 ASCII character Description: Sets what character will be used as a prompt when in command mode. If S59 is set to 0 then no prompt will be given. PROTOCOL/SPEED Type: Register Format: AT [cmds] S50=n [cmds] Description: Selects the protocol used for communications. Command Function S50=0 Auto-detect fastest common protocol. S50=1 Use Bell 103. S50=2 Use Bell 212A or V.22. S50=3 Use V.22bis. S50=6 Use V.32. S50=254 Use speed of last AT command. PROTOCOL SELECTION Type: Register Format: AT [cmds] S90=n [cmds] Description: Selects which protocol will be used when making 1200bps connections. Command Function S90=0 Use Bell 212A. S90=1 Use V.22. REPORT INFORMATION Type: Immediate Format: AT [cmds] In [cmds] Description: Displays information requested. Command Function I0 Reports modem model and revision. I1 Reports total of error codes for executed tests. I2 Reports the current connect mode. I4 Reports current connection statistics. RESULT CODES Type: Configuration Format: AT [cmds] Qn [cmds] Description: Selects when result codes will be reported. Command Function Q0 All result codes will be reported. Q1 Only remote result codes will be reported. Q2 Only local result codes will be reported. Q3 No result codes will be reported. Q4 All remote result codes will be reported; local result codes will only be reported if an ATD or ATA command was entered. Modem does not report the RING result code in any mode. Q5 Local result codes will only be reported if an ATD or ATA command was entered. Modem does not report the RING result code in any mode. Q6 All remote result codes will be reported; modem will not report basic result codes when in answer mode. Modem does not report the RING result code in any mode. Q7 Modem will not report remote result codes. Modem will not report local basic result codes when in answer mode. Modem does not report the RING result code in any mode. Q8 All remote result codes will be reported; local result codes will only be reported if the local modem Is originating. Q9 Local result codes will only be reported if the local modem Is originating. RESULT CODES Type: Configuration Format: AT [cmds] Xn [cmds] Description: Enables dial tone detection and selects which result codes the computer will return. Command Function X0 Busy and dial tone detection disabled; basic result codes only enabled. X1 Busy and dial tone detection enabled; all standard result codes enabled. X2 Busy and dial tone detection enabled; all standard and MNP result codes enabled. X10 Busy and dial tone detection disabled; basic result codes only enabled. X11 Busy and dial tone detection disabled; basic result codes with connect speed enabled. X12 Busy tone detection disabled, dial tone detection enabled; basic result codes with connect speed enabled. X13 Busy tone detection enabled, dial tone detection disabled; basic result codes with connect speed enabled. X14 Busy and dial tone detection enabled; basic result codes with connect speed enabled. RETRAIN Type: Immediate Format: AT [cmds] &R [cmds] Description: Initiates a retrain. SPEAKER VOLUME Type: Register Format: AT [cmds] S61=n [cmds] Default: 150 Range: 0 - 255 Unit: N/A Description: Sets the volume of the speaker to the number specified. Larger numbers indicate higher volume. SPEED NEGOTIATION Type: Register Format: AT [cmds] S94=n [cmds] Description: Sets how the modem will negotiate the connection speed in regards to the S50 register. Command Function S94=0 Modem will connect only at speed set by S50. S94=1 Modem will connect at any speed up to and including the speed set by S50. S94=2 Modem will connect at any speed supported by the data modulation set by S50. S94=3 Modem will connect at the speed set by S50 and, if possible, fall back to the next lowest speed. SOFT RESET Type: Immediate Format: AT [cmds] Zn [cmds] Description: Resets modem and command settings to the profile specified. Command Function Z0 Restore profile specified by S255. Z1 Restore profile 0. Z2 Restore profile 1. SOFT RESET Type: Immediate Format: AT [cmds] &En [cmds] Description: Resets modem and command settings to the profile specified. Command Function &E0 Restore profile specified by S255. &E1 Restore profile 0. &E2 Restore profile 1. STORE CONFIGURATION Type: Immediate Format: AT [cmds] &Wn [cmds] Description: Stores the current configuration to the specified profile in non-volatile RAM. Command Function &W0 Store to profile specified by S255. &W1 Store to profile 0. &W2 Store to profile 1. STORE TELEPHONE NUMBER Type: Configuration Format: AT [cmds] Nn=<#>\xxxx\ [cmds] Description: Stores the indicated telephone number at memory location n. The string xxxx between the backslashes sets an optional name for that stored number. Note: If additional commands are to be given after this command, the backslashes must be used even if there is no string between them. TALK/DATA SWITCH Type: Register Format: AT [cmds] S105=n [cmds] Description: Controls the operation of SW2. Command Function S105=0 Talk/Data switch disabled. S105=1 Talk/Data switch enabled. S105=2 Talk/Data switch enabled when modem is on hook. USER PROFILE Type: Register Format: AT [cmds] S255=n [cmds] Description: Sets which user profile will be used as the default. Command Function S255=0 Default profile set by SW3. S255=1 Modem will load profile 0 by default. Auto-dial functions use first stored number. S255=2 Modem will load profile 1 by default. Auto-dial functions use second stored number. V.32 ANSWER MODE TIMER Type: Register Format: AT [cmds] S93=n [cmds] Default: 8 Range: 3 - 255 Unit: .1 second Description: Sets the amount of time that, when in answer mode, the modem will wait for a V.32 originate sequence before dropping down to the next slowest protocol. VOICE MODE Type: Immdeiate Format: AT [cmds] G [cmds] Description: Commands the modem to break the data connection and go on-hook so that the line may be used for voice mode. If the telephone’s handset is picked up, the call will not be disconnected. XOFF REISSUE Type: Register Format: AT [cmds] S65=n [cmds] Description: Selects whether the modem will reissue XOFF characters if the DTE continues to transmit after an XOFF. Command Function S65=0 Modem will not reissue XOFF characters. S65=1 Modem will reissue XOFF characters. XON HANDLING Type: Register Format: AT [cmds] S69=n [cmds] Description: Sets how the modem processes XON characters coming from the DTE. Command Function S69=0 XON character is trapped by modem. S69=1 XON character is passed to remote modem. S69=2 XON character trapped by modem if it is in XOFF state; otherwise, it is passed to remote modem.