Chapter 5 – AT Commands, S-Registers, and Result Codes
Multi-Tech Systems, Inc. SocketModem MT5600SMI Developer’s Guide 42
of silence before the expiration of the call abort timer (S7), the
modem will terminate the call attempt with a NO ANSWER message.
If busy detection is enabled, the modem may terminate the call wit h
the BUSY result code. If answer tone arrives during execution of t his
parameter, the modem handshakes.
& Wait for credit card dialing tone before continuing with the dial string.
If the tone is not detected within the time specified by S7 (US
models) or S6 (W-class models), the modem will abort the rest of the
sequence, return on-hook, and generate an error message.
, Dial pause: the modem will pause for a time specified by S8 before
dialing the digits following ",".
; Return to command state. Added to the end of a dial string, this
causes the modem to return to the command state after it processes
the portion of the dial string preceding the ";". This allows the us er to
issue additional AT commands while remaining off-hook. The
additional AT commands may be placed in the original command line
following the ";" and/or may be entered on subsequent command
lines. The modem will enter call progress only after an additional dial
command is issued without the ";" terminator. Use "H" to abort the
dial in progress, and go back on-hook.
^ Toggles calling tone enable/disable: appli cable to current dial
attempt only.
( ) Ignored: may be used to format the dial string.
- Ignored: m ay be used to format the dial string.
<space> Ignored: may be used to form at the dial string.
<i> Invalid character: will be ignored.
> If enabled by country specific parameter, th e modem will generate a
grounding pulse on the EARTH relay output.
Command: T Set Tone Dial Default
Description: Forces DTMF dialing until the next P dial modifier or P command is
received. The modem will set an S-Parameter bit to indicate that a ll
subsequent dialing should be conducted in tone mode. The DP comma nd
will override this command. Clears S14 bit 5.
This command may not be permitted in some countries. (See P.)
Result Code: OK
Command: P Set Pulse Dial Default
Description: Forces pulse dialing until the next T dial modifier or T comman d is
received. Sets S14 bit 5.
As soon as a dial command is executed which explicitly spe cifies the
dialing mode for that particular call (e.g., ATDT...), this command is
overridden so that all future dialing will be tone dialed. (See T com mand.)
This command may not be permitted in some countries.
Result Code: OK