Supported Commands In Voice Mode Operation - ZyXEL Communications Omni 288S User Manual

The DTE can select the flow control method in voice mode by using the +FLO
command (defined in Class 2 and 2.0).

Supported Commands in Voice Mode Operation

ATD (with +FCLASS=8)
This command causes the DCE to dial a phone number. The DCE uses the current
destination setting to perform a dial action. If +VLS is equal to zero at the time of
the ATD command, the DCE will return an ERROR result code.
The DCE attempts to determine when the remote station has gone off-hook by
ringback detection and disappearance (see the +VRA and +VRN commands,
respectively). Once the DCE has determined with high confidence that the remote
station has gone off hook, the DCE returns the OK result code. For example, the
DCE reports this result code when the DCE has determined on answer that the
remote station is a data modem. The DCE may also issue this result code when the
DCE has assumed that the remote station has gone off-hook by actions associated
with the +VRA and the +VRN commands.
The DCE issues the NO ANSWER result code when the DCE has continuously
detected ringback for the amount of time specified in S-register S7.
ATH (with + FCLASS=8)
This command causes the DCE to hang up the phone. In voice mode, this
command is equivalent to the +VLS=0 command, and the DCE to the data mode
(+FCLASS=0) with auto-baud, regardless of the state of the +VNH command.
When the +VNH=0 command is in effect and the DCE is not in voice mode, the
ATH command behaves as for the data mode.
This command does not change any of the voice mode parameters such as +VSM,
+VSD, etc. When the +VNH=1 or +VNH=2 command is in effect and the DCE is
not in voice mode, the DCE issues an OK result code as a result of the ATH
command, but the DCE may or may not go on-hook depending on the setting of the
+VNH command. As part of the call discrimination algorithm, the DCE may
switch to other modes, such as facsimile or data, in order to try handshakes in
these modes. Voice mode does not support the ATH1 command.
AT+FCLASS=<mode>
This command selects a DCE mode. Either data, fax, or voice. The DCE
recognizes the value of 8 as the Voice Mode.
<mode>
0
1
2
2.0
6
Chapter 10 - Voice Mode Operation
DCE mode
Data Mode
Fax Mode, Service Class 1 (TIA/EIA-578)
Fax Mode, Service Class 2 (TIA PN-2388)
Fax Mode, Service Class 2.0 (TIA/EIA-592)
Fax Mode, ZyXEL Fax AT Commands
10-12