TELEBIT CORPORATION
TRAILBLAZER PLUS PC
Card Type |
Modem (synchronous/asynchronous) |
Processor |
Motorola 68000 |
Processor Speed |
Unidentified |
Chipset |
Unidentified |
Maximum Data Rate |
18Kbps |
Data Bus |
8-bit ISA |
Data Modulation |
Bell 103A/212A ITU-T V.22, V.22bis Telebit PEP |
Error Correction/Compression |
MNP3 |
CONNECTIONS | ||||||
Function |
Label |
Function |
Label | |||
Line in |
CN1 |
Line out |
CN2 |
USER CONFIGURABLE SETTINGS | ||
Setting |
Label |
Position |
í Factory configured - do not alter |
JP1 |
Unidentified |
í Factory configured - do not alter |
E25 |
Unidentified |
SERIAL PORT CONFIGURATION | ||||
Address |
IRQ |
E22 |
E23 |
E24 |
3F8h (COM1:) |
IRQ4 |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
2F8h (COM2:) |
IRQ3 |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
3E8h (COM3:) |
IRQ4 |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
2E8h (COM4:) |
IRQ3 |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
SUPPORTED STANDARD COMMANDS |
Basic AT Commands |
+++, ‘comma’, A/ |
A, C, E, F, H, M, O, V, X, Z |
&F, &T |
S-Registers |
S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12 |
Note: See MHI documentation for complete information. |
Proprietary AT Command Set
ANSWER/ORIGINATE MODE | ||
Type: |
Register | |
Format: |
AT [cmds] <>n [cmds] | |
Description: |
Selects whether the modem answers calls in answer or originate mode. | |
Command |
Function | |
í 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. |
AT PREFIX | ||
Type: |
Register | |
Format: |
AT [cmds] S63=n [cmds] | |
Description: |
Selects whether the AT prefix is required in command mode. | |
Command |
Function | |
S63=0 |
AT prefix not required. All characters entered in command mode will be assumed to be commands. | |
í S63=1 |
AT prefix required for command 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 | |
í 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. |
BITS PER CHANNEL - TRANSMIT | |
Type: |
Read-only |
Format: |
AT [cmds] S71? [cmds] |
Description: |
Displays the number of bits assigned to each of the 511 transmit channels of a PEP mode connection. |
BITS PER CHANNEL - RECEIVE | |
Type: |
Read-only |
Format: |
AT [cmds] S73? [cmds] |
Description: |
Displays the number of bits assigned to each of the 511 receive channels of a PEP mode connection. |
BREAK LENGTH | |
Type: |
Register |
Format: |
AT [cmds] S62=n [cmds] |
Default: |
3 |
Range: |
0 - 255 |
Unit: |
50 mS |
Description: |
Sets the length of transmitted break signals. |
BREAK TYPE | ||||
Type: |
Register | |||
Format: |
AT [cmds] S54=n [cmds] | |||
Description: |
Configures the modem’s reaction to a break signal. | |||
Command |
Break from DTE in non-PEP mode |
Break from DTE in PEP mode |
Break received from remote modem | |
í S54=0 |
Online command mode enabled, break not sent to remote modem. |
Online command mode enabled, break not sent to remote modem. |
Buffers cleared, break sent to DTE. | |
S54=1 |
Break sent to remote modem. |
Break sent to remote modem and buffers cleared. |
Buffers cleared, break sent to DTE. | |
S54=2 |
Break sent to remote modem. |
Break sent to remote modem immediately. |
Buffers cleared, break sent to DTE. | |
S54=3 |
Break sent to remote modem. |
Modem sends break in sequence when in data mode, and immediately when in command mode. |
Buffers cleared, break sent to DTE. | |
S54=4 |
Break signal ignored. |
Break signal ignored. |
Buffers cleared, break sent to DTE. |
COMMAND SET DISABLE | |
Type: |
Immediate |
Format: |
AT [cmds] &B |
Description: |
Disables the command set for local commands. |
COMPRESSION | ||
Type: |
Register | |
Format: |
AT [cmds] S110=n [cmds] | |
Description: |
Selects whether the modem will use data compression when connected in PEP mode. | |
Command |
Function | |
S110=0 |
Compression disabled. | |
S110=1 |
Compression enabled if remote modem has compression enabled. | |
í S110=255 |
Compression enabled if remote modem has S110 set to 1. |
CONNECT MODE | ||
Type: |
Register | |
Format: |
AT [cmds] S95=n [cmds] | |
Description: |
Selects the type of non-PEP MNP mode connection that the modem will attempt to make. | |
Command |
Function | |
í 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 | |
í S67=0 |
CTS is forced high. | |
S67=1 |
CTS forced high 200 mS after RTS and CD go high. If RTS or CD is low, CTS is forced low. |
CURRENT RECEIVE RATE | |
Type: |
Read-only |
Format: |
AT [cmds] S72? [cmds] |
Description: |
Displays the number of bits per second that the data line is carrying from the remote modem at that moment. |
Note: |
This command is only valid in PEP mode. |
CURRENT TRANSMISSION RATE | |
Type: |
Read-only |
Format: |
AT [cmds] S70? [cmds] |
Description: |
Displays the number of bits per second that the data line is carrying to the remote modem at that moment. |
Note: |
This command is only valid in PEP mode. |
DATA FORMAT | ||
Type: |
Register | |
Format: |
AT [cmds] S60=n [cmds] | |
Description: |
Sets the format for the modem-to-DTE serial interface. | |
Command |
Function | |
í S60=0 |
Use 8 data bits, no parity, and 1 stop bit. | |
S60=1 |
Use 8 data bits, odd parity, and 1 stop bit. | |
S60=2 |
Use 8 data bits, even parity, and 1 stop bit. | |
S60=3 |
Use 8 data bits, no parity, and 2 stop bits. | |
S60=4 |
Use 8 data bits, odd parity, and 2 stop bits. | |
S60=5 |
Use 8 data bits, even parity, and 2 stop bits. | |
S60=6 |
Use 7 data bits, no parity, and 1 stop bit. | |
S60=7 |
Use 7 data bits, odd parity, and 1 stop bit. | |
S60=8 |
Use 7 data bits, even parity, and 1 stop bit. | |
S60=9 |
Use 7 data bits, no parity, and 2 stop bits. | |
S60=10 |
Use 7 data bits, odd parity, and 2 stop bits. | |
S60=11 |
Use 7 data bits, even parity, and 2 stop bits. | |
S60=12 |
Use 6 data bits, no parity, and 1 stop bit. | |
S60=13 |
Use 6 data bits, odd parity, and 1 stop bit. | |
S60=14 |
Use 6 data bits, even parity, and 1 stop bit. | |
S60=15 |
Use 6 data bits, no parity, and 2 stop bits. | |
S60=16 |
Use 6 data bits, odd parity, and 2 stop bits. | |
S60=17 |
Use 6 data bits, even parity, and 2 stop bits. | |
S60=18 |
Use 5 data bits, no parity, and 1 stop bit. | |
S60=19 |
Use 5 data bits, odd parity, and 1 stop bit. | |
S60=20 |
Use 5 data bits, even parity, and 1 stop bit. | |
S60=21 |
Use 5 data bits, no parity, and 2 stop bits. | |
S60=22 |
Use 5 data bits, odd parity, and 2 stop bits. | |
S60=23 |
Use 5 data bits, even parity, and 2 stop bits. |
DCD AND DSR SIGNALS | ||
Type: |
Register | |
Format: |
AT [cmds] S53=n [cmds] | |
Description: |
Controls the behaviour of the DSR and CD signals. | |
Command |
Function | |
S53=0 |
DSR forced high when modem is idle, CD forced high. | |
í S53=1 |
DSR forced high when modem is idle, CD is normal. | |
S53=2 |
DSR follows CD, CD normal. | |
S53=3 |
DSR and CD normal. | |
S53=4 |
DSR forced high when idle and forced low on disconnect, CD normal. |
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 | |
í S64=0 |
Sequence aborted. | |
S64=1 |
Sequence not aborted. |
DISPLAY CONFIGURATION | |
Type: |
Immediate |
Format: |
AT [cmds] &Nn [cmds] |
Description: |
Displays the configuration stored in non-volatile RAM. |
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. |
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 | |
í S104=0 |
DTR dialing disabled. | |
S104=1 |
Modem auto-dials first stored number on low-to-high DTR change. | |
S104=2 |
Automatically dial first stored number whenever no call is connected and DTR signal is high. |
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. | |
í S52=1 |
Modem goes idle on low DTR. | |
S52=2 |
Modem is reset on low DTR. |
ECHO SUPPRESSOR COMPENSATION | ||
Type: |
Register | |
Format: |
AT [cmds] S121=n [cmds] | |
Description: |
Selects whether the modem will compensate for echo suppressors. | |
Note: |
Enabling the echo suppressor compensator reduces throughput by about five percent. | |
Command |
Function | |
í S121=0 |
Echo suppressor compensator disabled. | |
S121=1 |
Echo suppressor compensator enabled. |
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 | |
í 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 | |
í 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. |
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 |
Unidirectional RTS flow control enabled. |
í S68=3 |
Bidirectional XON/XOFF flow control enabled. |
S68=4 |
Bidirectional XON/XOFF and RTS/CTS enabled. |
S68=5 |
Bidirectional ENQ/ACK flow control enabled. |
S68=6 |
Bidirectional XON/XOFF and ENQ/ACK flow control enabled. |
S68=255 |
Flow control specified in S58 is used. If S58 is set to 1, then DCE flow control is disabled. |
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 |
Bidirectional RTS/CTS flow control enabled. |
S58=2 |
Unidirectional RTS flow control enabled. |
í S58=3 |
Bidirectional XON/XOFF flow control enabled. |
S58=4 |
Bidirectional XON/XOFF and RTS/CTS enabled. |
S58=5 |
Bidirectional ENQ/ACK flow control enabled. |
S58=6 |
Bidirectional XON/XOFF and ENQ/ACK flow control 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 |
í S91=0 |
Guard tone disabled. |
S91=1 |
1800Hz guard tone enabled. |
S91=2 |
550Hz guard tone enabled. |
KERMIT MARK CHARACTER | |
Type: |
Register |
Format: |
AT [cmds] S112=n [cmds] |
Default: |
1 |
Range: |
0 - 127 |
Unit: |
1 ASCII character |
Description: |
Sets the character that will be used as the beginning of packet marker when in Kermit protocol mode. |
LINE NOISE | |
Type: |
Read-only |
Format: |
AT [cmds] S76? [cmds] |
Description: |
Displays the line noise level for each of the 511 channels of a PEP mode connection. |
LINE QUALITY | |
Type: |
Read-only |
Format: |
AT [cmds] S78? [cmds] |
Description: |
Displays the line quality of the current connection. |
Note: |
This command is not valid in PEP mode. |
LOCAL SERIAL PORT SPEED | ||
Type: |
Register | |
Format: |
AT [cmds] S51=n [cmds] | |
Description: |
Selects the speed at which the modem communicates 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. | |
í S51=4 |
Set speed to 9600bps. | |
S51=5 |
Set speed to 19.2Kbps. | |
S51=255 |
Auto-detect speed from received "A" or "a" character. |
LOCK SERIAL PORT | |
Type: |
Register |
Format: |
AT [cmds] S66=n [cmds] |
Description: |
Sets operation of serial port speed. |
Command |
Function |
í S66=0 |
Serial speed follows connect speed. |
S66=1 |
Serial speed locked. |
PACKETS ACCEPTED | |
Type: |
Read-only |
Format: |
AT [cmds] S75? [cmds] |
Description: |
Displays the number of packets that the modem has accepted without errors. |
Note: |
This command is only valid in PEP mode. |
PACKETS RETRANSMITTED | |
Type: |
Read-only |
Format: |
AT [cmds] S74? [cmds] |
Description: |
Displays the number of packets that the modem has requested a retransmit for due to errors. |
Note: |
This command is only valid in PEP mode. |
PEP NEGOTIATION TONES | ||
Type: |
Register | |
Format: |
AT [cmds] S92=n [cmds] | |
Description: |
Selects when in the protocol negotiation sequence the PEP tones are sent. | |
Command |
Function | |
í S92=0 |
Send PEP tones at beginning of negotiation sequence. | |
S92=1 |
Send PEP tones at end of negotiation sequence. |
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 | |
í S49=0 |
Modem reports normal ID number. | |
S49=1 |
Modem reports 123 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 SELECTION | ||
Type: |
Register | |
Format: |
AT [cmds] S90=n [cmds] | |
Description: |
Selects which protocol will be used when making 1200bps connections. | |
Command |
Function | |
í S90=0 |
Use Bell 212A. | |
S90=1 |
Use V.22. |
PROTOCOL/SPEED | ||
Type: |
Register | |
Format: |
AT [cmds] S50=n [cmds] | |
Description: |
Selects the protocol used for communications. | |
Command |
Function | |
í 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=255 |
Use PEP. |
REMOTE CONFIGURATION | |
Type: |
Immediate |
Format: |
AT [cmds] %cmds |
Description: |
Attempts to execute the command string following the percent sign on the remote modem. If remote configuration is disabled, the modem will give no response; otherwise, it will respond OK. |
REMOTE CONFIGURATION ENABLE | ||
Type: |
Register | |
Format: |
AT [cmds] S45=n [cmds] | |
Description: |
Selects whether the modem will respond to remote configuration commands. | |
Command |
Function | |
í S45=0 |
Remote configuration disabled. | |
S45=255 |
Remote configuration enabled. |
REPORT INFORMATION | |
Type: |
Immediate |
Format: |
AT [cmds] In [cmds] |
Description: |
Displays information requested. |
Command |
Function |
I0 |
Reports modem model and revision. |
I1 |
Reports error code for the last executed test. |
I2 |
Reports the current connect mode. |
I3 |
Reports firmware revision. |
I4 |
Reports current connection statistics. |
RESULT CODES | ||
Type: |
Configuration | |
Format: |
AT [cmds] Qn [cmds] | |
Description: |
Selects when result codes will be reported. | |
Command |
Function | |
í 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. | |
Q5 |
Local result codes will only be reported if an ATD or ATA command was entered. | |
Q6 |
All remote result codes will be reported; local result codes will only be reported if the local modem Is originating. | |
Q7 |
Local result codes will only be reported if the local modem Is originating. |
RETRAIN | ||
Type: |
Immediate | |
Format: |
AT [cmds] &Rn [cmds] | |
Description: |
Initiates a retrain or a re-negotiation of features. | |
Command |
Function | |
&R0 |
Force retrain. | |
&R1 |
Force re-negotiation of features. |
SOFT RESET | |
Type: |
Immediate |
Format: |
AT [cmds] &En [cmds] |
Description: |
Restores modem profiles previously saved in non-volatile RAM using the &W command. |
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. |
TRANSFER PROTOCOL SELECTION | ||
Type: |
Register | |
Format: |
AT [cmds] S111=n [cmds] | |
Description: |
Selects which transfer protocol the should use. | |
Command |
Function | |
S111=0 |
No protocol will be used. | |
S111=10 |
Kermit with no parity enabled. | |
S111=11 |
Kermit with odd parity enabled. | |
S111=12 |
Kermit with even parity enabled. | |
S111=13 |
Kermit with MARK parity enabled. | |
S111=14 |
Kermit with SPACE parity enabled. | |
S111=20 |
XModem and YModem enabled. | |
S111=30 |
UUCP G protocol enabled. | |
í S111=255 |
Use protocol specified by remote modem. |
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 | |
í S65=0 |
Modem will not reissue XOFF characters. | |
S65=1 |
Modem will reissue XOFF characters. |