Cabletron Systems CSMIM-T1 manual Issuing AT Commands at any Speed, Repeat Last Command, Answer

Chapter 7: AT Commands and Registers

7.1.1.1Issuing AT Commands at any Speed

You can enter AT commands at any supported serial-port speed up to 115,200 bps. Your modem automatically adjusts to the connection and command speeds (autobauds) up to 19,200 bps. Any time after you enter an AT at any speed up to 19,200 bps, you can enter commands at a new serial-port speed. If you enter a command at 38,400, 57,600, or 115,200 bps, the serial port locks at that speed. The serial-port default speed is 38,400 bps.

To unlock the serial-port speed and change to another speed:

•Enter an AT$Bn command (where n is any supported serial-port speed), or

•type AT%U to unlock the serial-port speed, then enter an AT at the new speed, or

•with &D2, or &D3 set, lower then raise DTR.

7.2COMMANDS

This section lists the modem AT commands in alphabetical order. A command argument printed in bold is the default setting.

NOTE

In most cases, you will not need to change the default setting.

A/	Repeat Last Command
	Re-executes the last command immediately. The A/ command is
	not preceded by “AT” and not followed by <Enter>.

AAnswer

Forces the modem to go off hook in answer mode, regardless of the value of register S0.

If result codes are enabled, your modem returns the result code RING (long form) or 2 (short form) when it receives a call.

7-2 CSMIM-T1 Hardware Installation Guide