0 votes

When Zoiper gets received parameter on Contact Header , it sends re-registration with received IP parameter on Contact Header. So UA Server cannot understand that UAC is natted so dont sends Options packets! so after a while , Modem or Firewall closes Ports. and then UAC  is Zoiper that Unreachable. There isnt anything about  IETF! 

Version 3.9

Windows 10

 First Flow.
    UAC sends  Registration --->>    
    Contact : <sip:123456789@>    
    Kamailio answer for register <<---200 OK    
    Contact : <sip:123456789@>;received=
    Second Flow
    UAC sends re-registartion --->> (Oh God there is a received I must send registarion again!!)    
    Contact : <sip:123456789@>
    Kamailio answer for register <<---200 OK (OK Bro! you aren't Natted. No problem. I dont send Options)    
    Contact : <sip:123456789@>

in Windows by (120 points)

Please log in or register to answer this question.

Ask your questions and receive answers from other members of the Zoiper Community.

Did you check our Help Section?

You are a Zoiper Biz or Premium customer? If so, click HERE to get premium support.
2,438 questions
1,541 answers
134,936 users