Embedded Modem Developer's Guide

Chapter 5 – AT Commands, S-Registers, and Result Codes
Multi-Tech Systems, Inc. SocketModem MT5600SMI Developer’s Guide 71
FastConnect Commands
Command: $F FastConnect Control
Description: Allows configuring of the client modem to connect to a central site modem
that supports non-standard V.22 and V.22 bis FastConnect protocols.
Specifies the initial requested mode of operation when the modem is
operating as the originator. The options are:
Defined Values: $F0 Normal connection (Default)
$F1 FastConnect without answer tone
$F2 Reserved
$F3 FastConnect with answer tone
V.92 +P and –Q Commands
This section describes the +P (PCM DCE) and –Q commands and parameters used to control the V.92
Mode operation.
Command: +PCW Call Waiting Enable
Description: Controls the operation of the modem in the presence of call waiting.
Defined Values: +PCW0 Request modem-on-hold if enabled by +PMH and collect caller
ID information if enabled by +VRID. Toggle V.24 circuit 125.
(Default.)
+PCW1 Hang-up.
+PCW2 Ignore call waiting.
Result Codes: OK
ERROR
Report Commands: +PCW? Reports Selected Value(s).
Response: +PCW: <value>
Example: +PCW: 0 For the default setting.
+PCW=? Reports Supported Range of Parameter Values
Response: +PCW: (<value> range)
Example: +PCW: (0,1,2)
Command: +PMH Modem-on-Hold Enable
Description: Controls the selection of modem-on-hold in the modem. The action of the
modem in response to modem-on-hold events is determined by the state of
this command as well as the state of a negotiated handshake with a V.92-
compliant server in V.92 Mode.
Defined Values: +PMH0 Modem-on-hold enabled in V.92 Mode. (Default.)
+PMH1 Disabled modem-on-hold.
Result Codes: OK 0 or 1 in V.92 Mode (see the +MS command)
ERROR
Report Commands: +PMH? Reports Current or Selected Value.
Response: +PMH: <current value>
Example: +PMH: 0 For the default setting.
+PMH=? Reports Supported Range of Parameter Values.
Response: +PMH: (<value> range)
Example: +PMH: (0,1)