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TRAILBLAZER PLUS PC modem/telephone/ISDN Settings and Configuration






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.








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