#CLS Data, Fax or Voice/Audio Select
The AT#CLS=x command selects data, fax, or voice/audio. The x parameter selects the mode.
x
Ø
1
2
8
#VLS Voice Line Select
AT
Command
#VLS?
#VLS=?
#VLS=Ø
#VLS=1
#VLS=2
#VLS=3
#VLS=4
#VLS=5
#VLS=6
#VLS=7
#VLS=8
36
Mode/Notes
Data mode. Similar to +FCLASS=Ø. Also used during a disconnect or
inactivity timeout to ensure that the modem is in a known state despite
disorderly DTE behavior.
Class 1 fax mode. Similar to +FCLASS=1. Instructs the modem to be a
Class 1 faxmodem. Once this is set, the +FAE or the +FAA command can
be used to force Class 1 adaptive answers.
Class 2 fax mode. Instructs the modem to be a Class 2 faxmodem. Once
this is set, the +FAA command can be used to force Class 2 adaptive
answers.
Voice/Audio mode. This is the main setting the DTE uses to effect
directed or adaptive answer or originate sequences involving voice
modes. All telephone calls initialized by #CLS=8 result (after answer or
successful call progress) in the modem entering Online Voice
Command Mode.
The #VLS command selects which devices are routed through the modem.
Notes
Returns the current setting of the #VLS command as an ASCII
decimal value in result code format.
Requests a report of the device types available.
(Default.) Telephone line with telephone handset.
Transmit/Receive device (other than telephone line.)
Transmit Only device. Normally the onboard speaker
Receive Only Device. Normally the microphone.
Telephone line with Speaker ON and handset.
Telephone Emulation.
Speakerphone.
Mute the local handset during phone conversation; music on
Hold.
Record a handset conversation on phone line
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