IG7500 Administration Manual
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Figure 4-23.
Voice – System – Transmission – 1
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, G.726-16, G.726-24, G.726-32, G.726-40
: IG7500
supports different audio priority. You can choose “None”, “First”, “Second”, “Third”,
“Fourth”, “Fifth” and “Sixth”.
RFC2833 Payload
: It’s used as the default RFC2833 payload type when making the
outbound calls.
DTMF Type
: In IG7500, 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.
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.
Call ID Method
: The system provides the ability to detect the calling party identification
provided by PSTN lines. It also transmits the calling party identification to POTS ports.
There are four choices: NONE, DTMF Before Ring, DTMF After Ring, FSK Before Ring,
FSK After Ring.
Inter-digit Timeout
: Its range is from 2 to 9 seconds.