MT5656ZDX Multi-Tech Systems, MT5656ZDX Datasheet - Page 17

• Manufacturer Part Number: MT5656ZDX
• Description: MODEM V.92 DATA/FAX
• Manufacturer: Multi-Tech Systems
• Series: MultiModem® ZDXr

Specifications of MT5656ZDX

• Data Format: V.92
• Interface: RS-232
• Voltage - Supply: 9V
• Mounting Type: Desktop
• Package / Case: 5.7" L x 4.3" W x 1.0" H (145mm x 109mm x 25mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 881-1020

Command: +PCW=n Call Waiting Enable
Values:
Default:
Description:
Command: +PIG=n
Values:
Default:
Description:
Command: +PQC=n Quick Connect Control
Values:
Default:
Description:
Command:
Description:
Values:
Result Codes:
Report Commands:
Multi-Tech Systems, Inc. AT Commands Reference Guide (S000273F)
Modem Connection Commands
+PSS
n = 0, 1, or 2
2
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.
+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?
PCM Upstream Ignore
n = 0 or 1
1
Controls the use of PCM upstream during V.92 operation. PCM upstream allows faster
upload speeds to a V.92 server.
+PIG=0
+PIG=1
+PIG=?
+PIG?
n = 0, 1, 2, or 3
3
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.
+PQC=0
+PQC=1
+PQC=2
+PQC=3
+PQC=?
+PQC?
Use Short Sequence
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.
Syntax: +PSS=<value>
<value> Decimal number corresponding to the selected sequence.
OK 0 - 2 in V.92 Mode (+MS=V.92)
ERROR Otherwise
+PSS? Reports selected values.
+PSS=? Reports supported range of parameter values.
0 The modems decide whether or not to use the short startup procedures.
1 Reserved.
2 Forces the use of the full startup procedures on the next and subsequent
Displays the currrent values.
Disables PCM upstream.
Enables PCM upstream.
Displays the allowed values.
Displays the current values.
Enables Short Phase 1 and Short Phase 2 (Quick Connect).
Enables Short Phase 1.
Enables Short Phase 2.
Disables Short Phase 1 and Short Phase 2.
Displays the allowed values.
Displays the current values.
The short startup procedures can only be used if enabled by the +PQC
command. Default
connections independent of the setting of the +PQC command.
Chapter 2 – AT Commands
17