TRENDnet TFM-PCIV92A Select B212A/B103, Tone dial, E1 Enables echo, Medium speaker volume

TFM-PCIV92A User’s Guide

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Appendix 2 AT command set

Executing commands

Your modem is in Command Mode upon power-on and is ready to receive and execute AT commands. The modem remains in Command Mode until it makes a connection with a remote modem. Commands may be sent to the modem from an attached terminal or a PC running a communication program. This modem is designed to operate at common DTE speeds ranging from 115.2 Kbps to 300 bps. All commands and data must be issued to the modem using one of the valid DTE speeds.

AT commands and format

All commands must begin with the AT prefix, followed by the command letter and ended with the ENTER key. All default settings are printed in bold text. Spaces are allowed in the command string to increase command line readability but are ignored by the modem during command execution. All commands may be typed in either upper or lower case, but not mixed. A command issued without any parameters is considered as specifying the same command with a parameter of "0".

Example: ATL [ENTER]

This command causes your modem to lower its speaker volume.

AT Command Summary
AT	Command prefix
A/	Repeat last command
A	Answer
B0	Select V.22/V.21
B1	Select B212A/B103
B15	Select V.21 when the modem is at 300 BPS
B16	Select Bell 103J when the modem is at 300 BPS
D	Dial
0 - 9	Dialing digits
ABCD*#	Tone dial characters
L	Redial last number
P	Pulse dial
T	Tone dial
V	The modem switches to speakerphone mode and dials the number
R	The modem goes into answer mode directly after finish dialing
S=n	Dial stored telephone number n
W	Wait for dial tone
	- 17 -	Rev.1.00.2.1.34

TFM-PCIV92A User’s Guide

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AT Command prefix

,Pause the time specified in S-register S8

! Flash hook

@Wait for quiet answer

^Disable data calling tone transmission

$ Bong tone detection

;Return to command mode

E0 Disables echo

E1 Enables echo

H0 Hang up the telephone line

H1 Pick up the telephone line

I0	Reports modem identify string and driver version number
I1	Calculate ROM checksum and report it to DTE
I2	Verifies ROM checksum and report OK or ERROR
I3	Report modem identify string and driver version number
I4	Report firmware version for datapump
I5	Report the board/firmware ID, country ID and subsystem vendor ID
I9	Report country ID
I11	Report connection information
L0	Low speaker volume
L1	Low speaker volume
L2	Medium speaker volume
L3	High speaker volume
M0	Speaker always off
M1	Speaker on until carrier present
M2	Speaker always on
M3	Speaker off during dialing; speaker on until carrier present
N0	Handshake only at the communication standard specified by S37 and
	ATB command
N1	Begin the handshake at the communication standard specified by s37 and ATB,
	and fallback to lower speed may occur
O0	Return to data mode
O1	Retrain and return to data mode
O3	Rate re-negotiation and return to data mode

PSelect pulse dialing

Q0 Enables result code

Q1 Disables result code

Sn	Select S-register n; refer to S-register summary for the details
	- 18 -	Rev.1.00.2.1.34