3Com PC Card User Manual page 33

, Causes a delay, determined by S8, before the modem proceeds with the
next command or digit.
= Same as the ',' modifier except that the delay is doubled.
! Causes the modem to go on-hook for .5 second and then off-hook for .5
second before continuing.
@ Causes the modem to wait until it detects 5 seconds of silence before
continuing.
; Causes the modem to go to the command mode when the number is
dialed. In order to proceed with channel establishment mode ATO or ATD
must be entered. Any characters that follow this parameter are treated as
AT commands.
^ Do not send calling tone.
# Causes a 0.5 second delay before the modem dials the digits (DTMF)
following this modifier.
L Causes the last telephone number that was dialed by the modem to be
re-dialed.
S Causes the modem to dial the number in stored position "n" Format is
S=n or Sn. If S41 is set to a value other than 0, the modem will attempt a
maximum of S41 redials upon call failure. In error correction mode S38
dictates the delay before terminating a call (matched with S10).
E: Echo Commands
Defines whether characters are echoed back from the modem to the DTE when in
command mode.
E0 Command echo inhibited.
E1 Command echo enabled.
H: Hook Switch Control
Controls the modem's hook switch relay.
H0 Terminates a call.
H1 Causes the modem to go off-hook.
I: Interrogate Modem Status
I0 Requests the modem code.
I1 Requests that a checksum calculation be performed on the software
ROM. The answer is displayed as four hexadecimal digits.
AT Commands 29