SIP Extensions

1.Support PRACK method: enable SIP PRACK support.

2.Encode SIP URI with user parameter: encode user=phone parameter in

SIP URI.

3.Send INVITE with Timer header: encode Timer header in all INVITE requests for ringing timeout

4.SIP session timer: enable SIP session timer function.

5.Conditional Call Forwarding Timer: Forward the call to the pre-configured number if the phone does not pick up within the timer.

6.Disable Call Waiting: disable the call waiting tone.

7.Disable Caller-ID display: disable the caller-id display of incoming calls.

8.Call Hold using C=0.0.0.0: using the call hold method described in RFC2543. If unchecked, the call hold would follow RFC3263 method

9.Send NOTIFY: send out NOTIFY request to transferor for unattended and attended call transfer.

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LevelOne 2110, 4100, VOI-1110, 2100 manual SIP Extensions, Sip Uri

2110, VOI-1110, 2100, 4100 specifications

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