Cabletron Systems CSMIM-T1 Manual De Usuario

Chapter 7: AT Commands and Registers

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.

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

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

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. 

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