Using Voice mode with Analog Modems

Brief overview to enable TAM (Telephone Answering Machine) mode or Speaker Phone mode in your Analog Modem.

Please note that Speakerphone mode is only supported on VOICE products.


---------- TAM (Telephone Answering Machine) mode: ----------
; Initialize modem to factory default/known state.
AT&F responds OK

; Place modem into voice mode.
AT+FCLASS=8 responds OK

; Insert other desired commands.
+VIP, +VSM, +VGT, +VGR, etc...

; Originate in TAM mode.
ATDTxxxx responds OK when ring back has disappeared or timed out. This is when the remote side has likely answered.

; Answer option #1 in TAM mode.
Modem will auto answer in TAM mode if ATS0 is greater than 0.

; Answer option #2 in TAM mode.
Wait for DLE-R (RING) message.
AT+VLS=1 responds OK

; Now transmit or receive files.
AT+VTX or AT+VRX responds CONNECT


---------- Speaker Phone Mode: ----------
; Initialize modem to factory default/known state.
AT&F responds OK

; Place modem into voice mode.
AT+FCLASS=8 responds OK

; Insert other desired commands.
+VIP, +VGS, +VGM, etc...

; Originate option #1 in Speaker Phone mode. (Conexant 5656 or 5692 products.)
; Set up modem to use microphone and speaker jacks.
AT+VLS=13 responds OK
; Dial number.
AT+VTS=x,x,x,x responds OK

; Originate option #2 in Speaker Phone mode. (Agere 5634 or 9234 products.)
; Set up modem to use microphone and speaker jacks.
AT+VLS=7 responds OK
; Dial number.
ATDTxxxx responds OK

; Answer option #1 in Speaker Phone mode. (Conexant 5656 or 5692 products.)
Wait for DLE-R (RING) message.
AT+VLS=13 responds OK

; Answer option #2 in Speaker Phone mode. (Agere 5634 or 9234 products.)
Wait for DLE-R (RING) message.
AT+VLS=7 responds OK

Further command information can be found in the +V Developer's Guide on our website or within the AT Command Manual for the modem being used.

** Note:
The AT+VSP=1 command should only be used in speakerphone mode when using an external/tabletop microphone and speakers. It should not be issued when using a microphone and speaker headset.