PRACK Should have always Route Header or Contact too and Route Header is strictly necessary Header

Hi Fellows,

I would like you can help me to be more clear with the following.

I have the following scenarios:

Peer to Peer (My Core to Access Peer Client)

INVITE to core without Route Header->

->INVITE from Access without Route Header

<-183 to the Acces with Requiere 100rel

183 from Core with Requiere 100rel<-

PRACK to Core without Route/Contact->

->PRACK from Access without Route/Contact

<-200OK Supported 100rel,precondition to Access

200OK Supported 100rel,precondition from Core<-

In this scenario I am getting that client(Peer Access) after send the 200OK to the Core PRACK, never send the 200OK/SDP to complete the calls and keep sending back a 183/SDP a few times and calls never get completed.