[Linphone-users] How can I add the contact to the ACK message

[Alan]

Hi

How can I add the contact to the ACK message ?

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Now the Message like this:

ACK sip:address@hidden:5060 SIP/2.0

Via: SIP/2.0/UDP 192.168.0.195:57096;rport;branch=z9hG4bK.lkZpZLR2s

From: <sip:address@hidden>;tag=GBdMgfb0G

To: <sip:address@hidden>;tag=6514dea20a8ba102

CSeq: 20 ACK

Call-ID: wRRrmLlBlN

Max-Forwards: 70

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I want to like this :

Via: SIP/2.0/UDP 192.168.0.195:57096;rport;branch=z9hG4bK.lkZpZLR2s

From: <sip:address@hidden>;tag=GBdMgfb0G

To: <sip:address@hidden>;tag=6514dea20a8ba102

CSeq: 20 ACK

Call-ID: wRRrmLlBlN

Max-Forwards: 70

Contact: <sip:address@hidden:5060>

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Alan(邱振佳)

address@hidden