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Command options:
#VLS? This query returns the current setting of the #VLS command
as an ASCII decimal value in result code format.
#VLS=? This query requests a report of the device types available
for selection. The response is a series of numbers separated
by commas, and each number indicates a device position number.
Currently, device position numbers do happen to correspond
to device type numbers as 0,1,2,3,or 4, but this correlation
is not required (i.e.,0's could be placed in the first few
device position number locations to correspond to multiple
telephone line connections.)
#VLS=n where n= 0 telephone line with telephone set (Default)
1 transmit/receive device (handset)
2 transmit only device (on-board speaker)
3 receive only (microphone)
4 telephone line with speaker on and handset
#VLS=0 The default option on the modem. This command instructs
the modem that when entering any of the three voice
operating submodes (Online Command, Transmit, or Receive),
that the telephone line interface should be routed through
the modem. The OK response is sent to the DTE, and any
previous connection is lost(i.e., the modem ends up on-hook
as a result of issuing this command to connect to the
telephone line).
#VLS=1 This command instructs the modem to route only the handset
through the modem. This setting can be chosen before
recording a greeting message.
#VLS=2 This command instructs the modem to route only the speaker
through the modem. This setting can Command Mode, and the
VCON response is generated for completeness. However,
since this is an output only device, nothing of consequence
can happen until the DTE sends the #VTX command.
#VLS=3 This command instructs the modem that only the auxiliary
input device(microphone) should be routed through the modem.
This setting can be chosen before recording a greeting
message.
#VLS=4 This command is the same as #VLS=0,except that the modem
enables the internal speaker as well as the telephone
line/handset circuit.
AT#VRA Ringback Goes Away Timer(Originate)
This command can be used, when originating a voice call(#CLS=8)to set
the "Ringback Goes Away" timer value, i.e., an amount of time (in units
of 100ms) measured from when the ringback cadence stops once detected.
If ringback is not detected within this period, the modem assumes
that the remote has picked up the line and switches to Online Voice
Command Mode. Every time a ringback cycle is detected, this timer is reset.
Parameters: n=0-255 (0-25.5 seconds); Default: 70 (7,000ms)
Result Code: OK If n=0-255
ERROR Otherwise.
Command options:
#VRA? Returns the current setting of the #VRA command as an ASCII
decimal value in result code format.
#VRA=? Returns the message,"0-255".
#VRA=0 Turns off the "ringback goes away timer." After one ringback,
the dialing modem sends VCON and enters Online Voice Command
Mode immediately.
#VRA=n Where n defines the period without ringback (after at least
