Contents:
Welcome to 56K Information Access
Installation for All Operating Systems
Technical Reference >
Introduction to Syntax and Procedures
Data Command Set
- Generic Modem Commands
- DTE Interface
- Call Control
- Modulation Control Commands
- Error Control Commands
- Data Compression Commands
- Diagnostic Commands
- V.92 +P Commands
- S Parameters
V.92 +P Commands
This section describes the +P (PCM DCE) and -Q commands and parameters used to control the V.92 Mode operation.
+PCW - Call Waiting Enable
This command controls the operation of the modem in the presence of call waiting.
Syntax
+PCW=
Defined Values
<value> Decimal number corresponding to the selected operation.
0 - Request modem-on-hold if enabled by +PMH and collect caller ID information
if enabled by +VRID. Toggle V.24 circuit 125. (Default.)
1 - Hang-up.
2 - Ignore call waiting.
Result Codes
|
OK
|
<value> = 0, 1, or 2 |
|
ERROR
|
Otherwise |
Reporting Selected Value(s)
Command: +PCW?
Response: +PCW:
Example: +PCW: 0 For the default setting.
Reporting Supported Range of Parameter Values
Command: +PCW=?
Response: +PCW: (
Example: +PCW: (0,1,2)
+PMH - Modem-on-Hold Enable
This command 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.
Syntax
+PMH=<value>
Defined Values
<value> Decimal number corresponding to the selected operation.
0 - Modem-on-hold enabled in V.92 Mode. (Default.)
1 - Disabled modem-on-hold.
Result Codes
|
OK
|
0 or 1 in V.92 Mode (see the +MS command) |
|
ERROR
|
Otherwise |
Reporting Current or Selected Value
Command: +PMH?
Response: +PMH: <current value>
Example: +PMH: 0 For the default setting.
Reporting Supported Range of Parameter Values
Command: +PMH=?
Response: +PMH: (<value>
Example: +PMH: (0,1)
+PMHT - Modem-on-Hold Timer
This command controls whether or not the modem will grant or deny a modem-on-hold (MOH) request as well as setting the MOH Timeout value.
Syntax
+PMHT=<value>
<value> Decimal number corresponding to selected setting.
0 - Deny V.92 modem-on-hold Request (Default.)
1 - Grant MOH with 10 second timeout
2 - Grant MOH with 20 second timeout
3 - Grant MOH with 30 second timeout
4 - Grant MOH with 40 second timeout
5 - Grant MOH with 1 minute timeout
6 - Grant MOH with 2 minute timeout
7 - Grant MOH with 3 minute timeout
8 - Grant MOH with 4 minute timeout
9 - Grant MOH with 6 minute timeout
10 - Grant MOH with 8 minute timeout
11 - Grant MOH with 12 minute timeout
12 - Grant MOH with 16 minute timeout
13 - Grant MOH with indefinite timeout
Result Codes
|
OK
|
0-13 in V.92 Mode (+MS=V92) |
|
ERROR
|
Otherwise |
Reporting Current or Selected Values
Command: +PMHT?
Response: +PMHT:<value>
Example: +PMHT: 0 For the default setting.
Reporting Supported Range of Parameter Values
Command: +PMHT=?
Response: +PMHT: (
Example: +PMHT: (0,1,2,3,4,5,6,7,8,9,10,11,12,13)
+PMHR - Initiate Modem-on-Hold
This command requests the modem to initiate or to confirm a modem-on-hold
procedure. The modem will return ERROR if modem-on-hold is not enabled or if
the modem is in an idle condition. The modem will return the string response
+PMHR:
Note: If modem-on-hold is enabled but the remote server does not support V.92 then the modem will always report 0 to show that the hold request is denied.
Syntax
+PMHR
Response
+PMHR:<value>
<value>
0 - V.92 MOH request denied or not available.
1 - MOH with 10 second timeout Granted.
2 - MOH with 20 second timeout Granted.
3 - MOH with 30 second timeout Granted.
4 - MOH with 40 second timeout Granted.
5 - MOH with 1 minute timeout Granted.
6 - MOH with 2 minute timeout Granted.
7 - MOH with 3 minute timeout Granted.
8 - MOH with 4 minute timeout Granted
9 - MOH with 6 minute timeout Granted.
10 - MOH with 8 minute timeout Granted.
11 - MOH with 12 minute timeout Granted.
12 - MOH with 16 minute timeout Granted.
13 - MOH with indefinite timeout Granted.
Result Codes
|
OK
|
0-13 in V.92 Mode (+MS=V92) |
|
ERROR
|
Otherwise |
+PIG - PCM Upstream Ignore
This command controls the selection of PCM upstream in the modem. The actual state of PCM upstream 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.
Syntax
+PIG=<value>
<value> Decimal number corresponding to the selected operation.
0 - Enable PCM upstream negotiation.
1 - Disable PCM upstream negotiation. (Default.)
Result Codes
|
OK
|
0 or 1 in V.92 Mode (+MS=V.92) |
|
ERROR
|
Otherwise |
Reporting Selected Value(s)
Command: +PIG?
Response: +PIG:<value>
Reporting Supported Range of Parameter Values
Command: +PIG=?
Response: +PIG: (<value>
Example: +PCW: (0,1)
+PMHF - V.92 Modem-on-Hold Hook Flash
This command causes the modem to initiate the flash hook sequence when in the modem-on-hold procedure. This enables switching to the second call (incoming or outgoing). This command applies only to V.92 modem-on-hold. There are no parameters associated with this command.
Syntax
+PMHF
Result Codes
|
OK
|
When the modem completes the flash hook sequence. |
|
ERROR
|
If this command is initiated and the modem is not on hold. |
+PQC - V.92 Phase 1 and Phase 2 Control
This command controls the global enabling or disabling of the V.92 shortened Phase 1 and Phase 2 startup procedures. This command is used in conjunction with the +PSS command.
Syntax
+PQC=<value>
<value> Decimal number corresponding to the selected setting.
0 - Enable Short Phase 1 and Short Phase 2. (Default.)
1 - Enable Short Phase 1 only.
2 - Not supported.
3 - Disable Short Phase 1 and Short Phase 2.
Result Codes
|
OK
|
0, 1, or 3 in V.92 Mode (+MS=V.92) |
|
ERROR
|
Otherwise |
Reporting Selected Values
Command: +PQC?
Response: +PQC:<value>
Example: +PQC: 0
Reporting Supported Range of Parameter Values
Command: +PQC=?
Response: +PQC: (
Example: +PQC: (0,1,3)
+PSS - 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=
Defined 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.)
1 - Reserved.
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 |
Reporting Selected Values
Command: +PSS?
Response: +PSS:
Example: +PSS: 0 For the default
Reporting Supported Range of Parameter Values
Command: +PSS=?
Response: +PSS: (<value>
Example: +PSS: (0,1,2)
