User guide

IG7600 Administration Manual

Figure 6-67. Voice – System – Transmission

Audio: It is used to set many Audio-related options. It will be applied to the all FXS and

PSTN lines.

Country: It may be used to determine not only the Caller ID detection/transmission

method but also ring/tone cadence/frequency.

RTP Packet Size: 10/20/30/40/50/60 ms.

Codec G.711 u-law, G.711 a-law and G.729: IG7600 supports different audio priority.

You can choose “None”, “First”, “Second” and “Third”.

RFC2833 Payload: It’s used as the default RFC2833 payload type when making the

outbound calls.

DTMF Type: In IG7600, there are two methods for transmitting DTMF tone. Select

RFC2833 Method, the DTMF tone will be transmitted by event packet. Select

SIP-INFO Method, the DTMF tone will be represent in SIP INFO Message.

Hold Recall Time: IG7600 provides hold recall function. When the hold recall time

expires, and IP Phone supported hold recall function, the IG will ring the IP Phone

again.

Conference Timeout: This configuration is to limit the time of a conference call. After

the time, conference call will end.

FXS: It is used to set many FXS-related options.

Fax Support: The system supports FAX/modem tone detection with G.711 and T38

mode.