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Voice Commands for the MT5656ZDXV and MT5600ZDXV Modems

Multi-Tech Systems, Inc. Commands Reference Guide (PN S000273D)

Configuration Commands

Command: +FCLASS=8 Select Voice Mode

+FCLASS=8 selects the Voice Mode. The Voice Mode commands and responses described in

this section are applicable when command +FCLASS=8. (See the Generic Modem Control

section for the definition of the FCLASS command.)

Command: +VCID Caller ID (See Caller ID +VCID on page 20)

Command: +VNH= Automatic Hang-up Control

Description: This command enables or disables automatic hangups.

Syntax: +VNH=<hook>

Defined Values: <hook> Decimal number corresponding to the selected option.

0 Modem enables automatic hangups as is normal in other modes.

1 Modem disables automatic hangups usually found in the other non-voice modes.

2 The modem disables automatic hangups in the other non-Voice Modes. The

modem performs only a “logical” hangup (returns to OK result code).

Reporting Current or Selected Values:

Command: +VNH?

Response: <hook>

Example: 0 For the default setting.

Reporting Supported Range of Parameter Values:

Command: +VNH=?

Response: (<hook> range)

Example: (0-2)

Result Codes: OK <hook> = 0-2.

ERROR Otherwise.

Command: +FLO Flow Control

Function: Select Flow Control Method

Values: 0, 1, 2, 3-255

Default:

Result Codes: OK, or ERROR

Description: The +FLO? command lets you select the method of flow control provided and used by

the modem. If +FLO=0, some other method (such as credit flow control) is used. The

Xon-Xoff method is required. Xon is the ASCII character <DC1> (11 hex). Xoff is the

ASCII character >DC3> (13 hex). CCITT V.24 circuits 106 and 133 are optional flow

control methods. If circuits 106 and 133 are not used (+FLO<>2), then circuit 106 is

held On whenever +FCLASS=8. In Voice mode, circuit 105 has no effect on the state of

transmitted data. (Circuit 133 normally reverts to use as circuit 105 (RTS) when not

used for Flow Control.)

+FLO=0 Disable Xon-Xoff and 133/105 flow control

+FLO=1 Enable Xon-Xoff flow control in either direction

+FLO=2 Enable CCITT Circuit 133 for flow control of the modem by the PC; use

CCITT Circuit 106 for flow control of the PC by the modem.

+FLO=3-255 Reserved for future standards

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 59 60

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