Dear all,

Hope you will help us with this issue.

In the INVITE message there is a field name CONTACT.

1. Is it possible that the ‘port’ in the CONTACT field is different from the UDP port?

2. What shall be the action in case the ports are different?

3. Is it true that the UDP port in BYE message shall be same as that of INVITE-CONTACT port?

4. Is there any clear reference in the RFC for treatment in this kind of situation?

Thanks and regards,

Amar Tuladhar.