Chapter 5 – AT Commands, S-Registers, and Result Codes

Command:

+PIG

PCM Upstream Ignore

Description:

 

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.

 

Defined Values:

 

+PIG0

Enable PCM upstream negotiation.

 

 

+PIG1

Disable PCM upstream negotiation. (Default.)

Result Codes:

 

OK 0 or 1 in V.92 Mode (+MS=V.92)

 

 

ERROR

 

Report Commands:

+PIG?

Reports Selected Value(s).

 

 

 

Response: +PIG: <value>

 

 

 

Example: +PIG: 1 For the default setting.

 

 

+PIG=?

Reports Supported Range of Parameter Values.

 

 

 

Response: +PIG: (<value> range)

 

 

 

Example: +PCW: (0,1)

Command:

+PMHF

V.92 Modem-on-Hold Hook Flash

Description:

 

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.

Result Code:

 

OK

When the modem completes the flash hook sequence.

 

 

ERROR

If this command is initiated and the modem is not on hold.

Command:

+PQC

V.92 Phase 1 and Phase 2 Control

Description:

 

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.

Defined Values:

 

+PQC0

Enable Short Phase 1 and Short Phase 2. (Default.)

 

 

+PQC1

Enable Short Phase 1 only.

 

 

+PQC2

Not supported.

 

 

+PQC3

Disable Short Phase 1 and Short Phase 2.

Result Codes:

 

OK 0, 1, or 3 in V.92 Mode (+MS=V.92)

 

 

ERROR

 

Report Commands:

+PQC?

Reports Selected Values.

 

 

 

Response: +PQC: <value>

 

 

 

Example: +PQC: 0

 

 

+PQC=?

Reports Supported Range of Parameter Values.

 

 

 

Response: +PQC: (<value> range)

 

 

 

Example: +PQC: (0,1,3)

Multi-Tech Systems, Inc. SocketModem MT5600SMI Developer’s Guide

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Multi-Tech Systems MT5600SMI-XL92, MT5600SMI-92 PCM Upstream Ignore, Modem-on-Hold Hook Flash, Phase 1 and Phase 2 Control