TRENDWARE INTERNATIONAL, INC

TFM-144P

Card Type

Fax, Modem (asynchronous)

Chip Set

Unidentified

Maximum Modem Rate

14.4Kbps

Maximum Fax Rate

14.4Kbps

Data Bus

PCMCIA Type II

Fax Class

Class I & II

Data Modulation Protocol

Bell 103A/212A

ITU-T V.21,V.22, V.22bis,V.32, V.32bis

Fax Modulation Protocol

ITU-T V.17, V.21 ch2, V.27ter, V.29

Error Correction/Compression

MNP2-5, V.42, V.42bis

Boot ROM

Not available

V2108

Proprietary AT Command Set

BIT-MAPPED REGISTER S14

Format:

AT [cmds] S14=n [cmds]

Default:

170

Range:

0-239

Unit:

Bit-mapped

Description:

Controls echo, result codes and display, dial mode, and answer/originate mode.

Bit

Value

Function

0

í 0

1

On-line state character echo disabled

On-line state character echo enabled

1

0

í 1

Command echo disabled

Command echo enabled

2

í 0

1

Result codes disabled

Result codes enabled

3

0

í 1

Display result codes in numeric format

Display result codes in verbose format

4

í 0

Not used

5

0

í 1

Tone dial enabled

Pulse dial enabled

6

í 0

1

Result codes disabled/enabled as set by bit 2 or Qn

Result codes enabled in originating mode

7

0

í 1

Answer mode enabled

Originate mode enabled

BIT-MAPPED REGISTER S21

Format

AT [cmds] S21=n [cmds]

Default:

Unidentified

Range:

0-255

Unit:

Bit-mapped

Description:

Selects jack type, CTS/DCD/DSR signals, low DTR action, and the long space disconnect function.

Bit

Value

Function

0

0

1

Selects RJ-11, RJ-41S, or RJ45S jack

Selects RJ-12 or RJ-13 jack

1

0

1

User profile 0

User profile 1

2

0

1

CTS follows RTS

CTS forced high

4, 3

00

01

10

11

DTR signal ignored

Modem goes to command mode on low DTR

Modem disconnects on low DTR; Auto-Answer is disabled.

Modem is initialized on low DTR

5

0

1

DCD forced high

DCD normal

6

0

1

DSR forced high

DSR normal

7

0

1

Long space disconnect function disabled

Long space disconnect function enabled

BIT-MAPPED REGISTER S23

Format

AT [cmds] S23=n [cmds]

Default:

Unidentified

Range:

0-191

Unit:

Bit-mapped

Description:

Grants/denies remote digital loopback, controls DTE rate and parity, and sets guard tone.

Bit

Value

Function

0

0

1

Remote digital loopback denied

Remote digital loopback allowed

3 - 1

000

001

010

011

100

101

110

111

Sets serial port speed to 0-300bps

Sets serial port speed to 600bps

Sets serial port speed to 1200bps

Sets serial port speed to 2400bps

Sets serial port speed to 4800bps

Sets serial port speed to 9600bps

Sets serial port speed to 19.2Kbps

Sets serial port speed to 38.4Kbps

5, 4

00

01

10

11

Parity even

Not used

Parity odd

No Parity

7, 6

00

01

10

Guard tone disabled

Guard tone 550Hz enabled

Guard tone 1800Hz enabled

BIT-MAPPED REGISTER S41

Format

AT [cmds] S41=n [cmds]

Default:

1

Range:

0-7

Unit:

Bit-mapped

Description:

Selects compression, auto-retrain, flow control, and MNP mode.

Bit

Value

Function

0

0

Data compression disabled

 

í 1

Data compression enabled

1

í 0

Auto-retrain disabled

 

1

Auto-retrain enabled

2

í 0

Stream mode for MNP

 

1

Block mode for MNP

7-3

 

Not used

BIT-MAPPED REGISTER S40

Format

AT [cmds] S40=n [cmds]

Default:

Unidentified

Range:

0-255

Unit:

Bit-mapped

Description:

Controls power level and break handling; selects MNP extended services, link negotiation, and block size.

Bit

Value

Function

1,0

00

Normal mode enabled

 

01

Normal mode enabled

 

í 10

MNP reliable mode enabled

 

11

Auto-reliable mode or MNP auto-reliable mode enabled

4, 3, 2

000

\K0

 

001

\K1

 

010

\K2

 

011

\K3

 

100

\K4

 

í 101

\K5

6, 5

00

MNP block size is 64 characters

 

01

MNP block size is 128 characters

 

10

MNP block size is 192 characters

 

11

MNP block size is 256 characters

7

0

Flow control disabled

 

1

Flow control enabled

COMMUNICATION PROTOCOLS

Type:

Configuration

Format:

AT [cmds] Bn [cmds]

Description:

Selects the communication protocol for data calls

Note:

The B command allows the simultaneous selection of more than one suffix, enabling multiple protocols.

Command

Protocol

B0

ITU-T V.22 and V.21 at 300 or 1200bps

B1

Bell 212A and 103 at 300 or 1200bps

 

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

DR

Answer mode enabled; originate mode disabled following handshake initiation.

DS=n

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^"

Call tone turned on

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.

DATA SET READY (DSR)

Type:

Configuration

Format:

AT [cmds] &Sn [cmds]

Description:

Selects DSR options

Command

Function

&S0

DSR forced high

&S1

DSR set to operate at EIA-232-D specifications

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

í S37=0

Speed of last connection

S37=1

300bps

S37=2

300bps

S37=3

300bps

S37=4

Reserved

S37=5

1200bps

S37=6

2400bps

S37=7

Reserved

S37=8

4800bps

S37=9

9600bps

S37=10

12.0Kbps

S37=11

14.4Kbps

S37=12

7200bps

DTR CHANGE THRESHOLD

Type:

Register

Format

AT [cmds] S25=n [cmds]

Default:

5

Range:

0-255

Unit:

.01 second

Description:

Sets maximum time a change in the DTR signal will be ignored

Note: This is the function of this register when &M1 is not set.

INACTIVITY TIMER

Type:

Register

Format

AT [cmds] S30=n [cmds]

Default:

0

Range:

0-255

Unit:

.1 sec

Description:

Maximum duration of DTE and DCE inactivity allowed prior to initiating hang-up process.

Note:

S30=0 disables the timer and allows indefinite inactivity.

INACTIVITY TIMER

Type:

Configuration

Format:

AT [cmds] \Tn [cmds]

Default:

0

Range:

0-42

Unit:

1 minute

Description:

Sets the length of time that the modem does not receive information before it disconnects.

NO CARRIER TIME-OUT

Type:

Register

Format

AT [cmds] S7=n [cmds]

Default:

50

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.

Note:

W dial modifier also uses S7 to set the maximum time to wait.

PULSE DIALING RATIO

Type:

Configuration

Format:

AT [cmds] &Pn [cmds]

Description:

Selects pulse dial make/break ratio

Command

Function

í &P0

39/61ms at 10pps (North America)

&P1

33/67ms at 10pps (Europe)

&P2

33/67ms at 20pps

REPORT INFORMATION

Type:

Immediate

Format:

AT [cmds] In [cmds]

Description:

Displays information requested

Command

Function

I0

Reports product code

I1

Reports ROM checksum

I2

Tests and reports ROM checksum

I3

Reports revision level of firmware

I4

Reports the capabilities of the product

RESULT CODES

Type:

Configuration

Format:

AT [cmds] Qn [cmds]

Description:

Enables modem to send result codes to the DTE

Command

Function

í Q0

Result code sending enabled

Q1

Result code sending disabled

Q2

Result code sending enabled only if originating call

v.42bis Compression type

Type:

Configuration

Format:

AT [cmds] %Mn [cmds]

Description:

Sets type of compression used in V.42bis mode

Command

Function

%M0

Compression disabled

%M1

Transmit compression enabled

%M2

Receive compression enabled

í %M3

Bi-directional compression enabled

v.42bis dictionary reset

Type:

Immediate

Format:

AT [cmds] %P [cmds]

Description:

Resets local and remote V.42bis Dictionaries

V.42bis dictionary size

Type:

Configuration

Format:

AT [cmds] %Dn [cmds]

Description:

Sets the size of the dictionary used in V.42bis mode

Command

Function

%D0

512

%D1

1024

í %D2

2048

%D3

4096

V.42bis Maximum string length

Type:

Configuration

Format:

AT [cmds] %Sn [cmds]

Default:

32

Range:

6-250

Unit:

Characters

Description:

Sets the Maximum number of characters that can be compressed into a word under V.42bis compression