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CN2x4 SIP Phone User’s Manual
- No Answer Forward Expiry
: the duration from forwarding to another number to time
out after the first callee's expiry. Count in second.
Note:
This value should less than the value of "No Answer Expiry".
- No
Answer
Expiry
: the duration from when it's determined to be "no answer" to ending
of the call. Count in second.
- NICT
Expiry
: the time value of NICT expiry. Count in second.
- ICT
Expiry
: the time value of ICT expiry. Count in second.
- Retransmit
T1
: the time value in millisecond of retransmit.
- Retransmit
T2
: the time value of retransmit. Count in millisecond.
•
DTMF Signaling
: two modes:
- Inband
: transmit secondary dialing number in RTP band by DTMF way.
- Outband
: set outband transmit protocol and RTP payload type also when using this
mode.
There are three kinds of outband transmit protocol provided:
• RFC2833
: define different payload value.
• SIP
INFO
: transmit in SIP message in relay mode.
• SIP
INFO(EVENT)
: transmit in SIP messagen in event mode.
Figure 7-19
Expiry Settings
Figure 7-20
DTMF outband transmit mode
