Silicon Laboratories SI2493/57/34/15/04 - Manual (Page 190)

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190 Rev. 1.3
Table 117. Voice Mode Operations (+FCLASS=8)
+VLS Mode Primitive DAA
Active
Detectors
Description +VTX +VRX +VSP +VTS
0 None On-Hook Ring, CID1 Voice mode is disabled.
1 T Off-Hook
FDV DTMF
2Tones*
TAM operation for call
answer with OGM playback
and record message using
DTE voice stream pass
through with no audio moni-
toring using Si3000.
RS232-
>DAA
DAA-
>RS232
RS232-
>DAA
4 S On-Hook Ring, CID1
Await call. Use +VTX for
melody playback via AOUT. RS232-
>AOUT RS232-
>AOUT
5 ST Off-Hook
FDV DTMF
2Tones*
Place call with audio call
progress on AOUT. +VTS
tone signal can be heard at
AOUT via DAA echo-back.
RS232-
>DAA
DAA-
>RS232
RS232-
>DAA
13 M1S1T Off-Hook
CID2
FDV DTMF
2Tones*
Speakerphone operation:
Use +VSP=1 to enable
AEC/LEC and speaker-
phone FIR filters without
side-tone gain. Only CID2
detector is active.
Handset operation: Use
+VSP=0 for handset opera-
tion with handset FIR filters
and side tone gain. All the
detectors are active. Same
as +VLS=15 without TAM
operation.
Si3000<
-->DAA
RS232-
>DAA
RS232-
>Si3000
14 H On-Hook
Ring, CID1
FDV DTMF
2Tones*
TAM operation for OGM
record and OGM/message
playback via DTE voice
stream pass through.
RS232-
>Si3000
DAA-
>RS232
Si3000-
>RS232
15 HT Off-Hook
CID2
FDV DTMF
2Tones*
Handset voice calls over
Si3000<-->DAA path.
TAM operation for call
answer with OGM playback
and record message using
DTE voice stream pass
through with audio monitor-
ing using Si3000.
RS232-
>DAA
RS232-
>Si3000
DAA-
>RS232
Si3000-
>RS232
RS232-
>DAA
RS232-
>Si3000
20 S On-Hook
Ring, CID1
FDV DTMF
2Tones*
Await call.