Multi-Tech Systems MT5600BA-V92 Manual Do Utilizador
Chapter 2 – AT Commands
Multi-Tech Systems, Inc. AT Commands Reference Guide (S000273G)
17
Modem Connection Commands
Command: +PCW=n Call Waiting Enable
Values:
n = 0, 1, or 2
Default:
2
Description:
Controls the action to be taken upon detection of a call waiting tone in V.92 mode.
Values specified by this command are not modified when an AT&F command is issued.
Values specified by this command are not modified when an AT&F command is issued.
+PCW=0 Toggles V.24 Circuit 125 and collects Caller ID if enabled by +VCID.
+PCW=1
Hangs
up.
+PCW=2 Ignores V.92 call waiting.
+PCW=? Displays the allowed values.
+PCW?
Displays the currrent values.
Command: +PIG=n PCM Upstream Ignore
Values:
n = 0 or 1
Default:
1
Description:
Controls the use of PCM upstream during V.92 operation. PCM upstream allows faster
upload speeds to a V.92 server.
upload speeds to a V.92 server.
+PIG=0
Disables
PCM
upstream.
+PIG=1
Enables
PCM
upstream.
+PIG=?
Displays the allowed values.
+PIG?
Displays the current values.
Command: +PQC=n Quick Connect Control
Values:
n = 0, 1, 2, or 3
Default:
3
Description:
Controls the V.92 shortened Phase 1 and Phase 2 startup procedures (Quick Connect).
When line conditions are stable, quick connect results in shortened connect times;
however, significant fluctuations in line conditions from call to call can result in longer
connect times, in which case it may be advisable to disable quick connect.
however, significant fluctuations in line conditions from call to call can result in longer
connect times, in which case it may be advisable to disable quick connect.
+PQC=0 Enables Short Phase 1 and Short Phase 2 (Quick Connect).
+PQC=1 Enables Short Phase 1.
+PQC=2 Enables Short Phase 2.
+PQC=3 Disables Short Phase 1 and Short Phase 2.
+PQC=? Displays the allowed values.
+PQC?
Displays the current values.
Command: +PSS
Use Short Sequence
Description:
This command causes a calling modem to force either a V.92 short or full startup
sequence as defined by the +PQC command on the next and subsequent connections.
sequence as defined by the +PQC command on the next and subsequent connections.
Syntax: +PSS=<value>
Values:
<value> Decimal number corresponding to the selected sequence.
0 The modems decide whether or not to use the short startup procedures.
The short startup procedures can only be used if enabled by the +PQC
command. Default
command. Default
1 Reserved.
2 Forces the use of the full startup procedures on the next and subsequent
2 Forces the use of the full startup procedures on the next and subsequent
connections independent of the setting of the +PQC command.
Result Codes:
OK 0 - 2 in V.92 Mode (+MS=V.92)
ERROR Otherwise
Report Commands:
+PSS? Reports selected values.
+PSS=? Reports supported range of parameter values.