SIP INVITE Request Port getting messed up -

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Developing NAT Traveler solutions, using, it works fine, but often unsuccessful of SIP invert, especially Cisco is on the router

1. SIP Register Port is sent by 1024

: Source: 107.108.188.26

Destination: 107.108.188.52

User Datagram Protocol, SRC Port : 1024 (1024), DST Port: SIP (5060)

Enter image details here

2 SIP status 200 OK

Source: 107.108.188.52

Destination: 107.108.188.26

User Datagram Protocol, SRC Port: SIP (5060), DST Port: 1024 (1024)

3. SIP / Sdp INVITE

Source: 107.108.188.52 Destination: 107.108.188.26 User Datagram Protocol, SRC Port: SIP (5060), DST Port: SIP (5060)

Enter image details here

Ideally, the port sent with 1024 steps Should be 1 and step 3. Please point me to any possible reason behind that

< Strong> and Contacts fields in your registrar In the request, specify both port 5060: sip: 192.168.5.2@107.108.188.26: 5060 .

It expresses that you want to receive calls (i.e. INVITE) on this port. .

If you want to get INVITEs at port 1024, change Yuri's host part to 107.108.188.26:1024 .

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