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3. TECHNICAL DESCRIPTION
This section provides a detailed description of the Voice Call TX functions.
Figure 3-3-5. Voice call Uplink Scheme
B. Voice Call Uplink Mode (Receiver,Speaker,Headset)
From the audio path view point, voice call has the same structure as video telephony. The TXMIX connection
enables insertion of audio into the uplink audio path. This can, for example, be used to play dictation
recordings for the listener at the other party, in a voice call or video telephony call. The connection to TXMIX
from the Audio Mixer must be performed in 8 kHz mono, since this is supported by the Voice mode. Due to
performance reasons it may not be possible to decode every audio format during video telephony.
Each Voice Uplink Mode paths shown below.
Receiver Mode : C-MIC(SPM0410LR5H) Æ AB3100 Input(MIC1N/1P)
Loud Speaker Mode : C-MIC(SPM0410LR5H) Æ AB3100 Input(SPK1N/1P)
Video Telephony Mode : C-MIC(SPM0410LR5H) Æ AB3100 Input(MIC1N/1P)
Headset Mode : Headset MIC ÆAnalog Switch(FSA201) Æ AB3100 Input(AUXI1N/1P)
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