TRENDnet TFM-PCIV92A User Guide - Page 10

TFM-PCIV92A User's Guide _____ 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 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 Command prefix 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 _____ AT , ! @ ^ $ ; E0 E1 H0 H1 I0 I1 I2 I3 I4 I5 I9 I11 L0 L1 L2 L3 M0 M1 M2 M3 N0 N1 O0 O1 O3 P Q0 Q1 Sn 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 Disables echo Enables echo Hang up the telephone line Pick up the telephone line Reports modem identify string and driver version number Calculate ROM checksum and report it to DTE Verifies ROM checksum and report OK or ERROR Report modem identify string and driver version number Report firmware version for datapump Report the board/firmware ID, country ID and subsystem vendor ID Report country ID Report connection information Low speaker volume Low speaker volume Medium speaker volume High speaker volume Speaker always off Speaker on until carrier present Speaker always on Speaker off during dialing; speaker on until carrier present Handshake only at the communication standard specified by S37 and ATB command Begin the handshake at the communication standard specified by s37 and ATB, and fallback to lower speed may occur Return to data mode Retrain and return to data mode Rate re-negotiation and return to data mode Select pulse dialing Enables result code Disables result code Select S-register n; refer to S-register summary for the details - 18 - Rev.1.00.2.1.34