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4.2.5.6 Gain<br />
/<strong>VoIP</strong> Setup/Advance Setup/Gain<br />
This page defines different function gain on the gateway.<br />
Gain when Dial tone phase:<br />
When phone off hook, user will hear the dial tone generated from the<br />
gateway, sser can adjust the play/record gain during this phase for<br />
stable DTMF detection. After connection, the gains setting here is no use,<br />
the gateway will adjust the gain setting on /Line Configure/Line<br />
setting/<br />
Play: Transmit gain from network to line. Adjust the speaker volume<br />
on the handset. Higher value will louder the speaker on local side.<br />
Record: Receive gain from line to network. Adjust the microphone<br />
volume on the handset. Larger value which will amplifier the MIC<br />
volume on local site.<br />
Incorrect value will cause the gateway can not receive the DTMF user<br />
pressed on phone set, please use the default 0dB if no other issue.<br />
DTMF Generate DSP play Gain [-29~3]<br />
Setting the internal gain used by DSP for generate the DTMF signal,<br />
incorrect value will cause the DTMF can not accept by other telephone<br />
equipment. Please use the default value if no other issue.<br />
Call progress Tone DSP play Gain[-31~0]<br />
Setting the internal gain used by DSP for generate the CPT ( Call Progress<br />
Tone), Incorrect value will cause the DTMF can not accept by other<br />
telephone equipment. Please use the default value if no other issue.<br />
Caller ID Detection record Gain [13~-3]<br />
Setting the Caller ID Receiver gain. Incorrect value will cause the Caller ID<br />
signal can not be receive, please use the default value if no other issue.<br />
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