[SR-Users] topoh ACK Call-ID mismatch

[Daniel-Constantin Mierla]

To understand properly, this is after the re-INVITE from B to A? I will
look in the code as I get a chance, being out of the office for few days...

Cheers,
Daniel

On 20/01/15 13:13, Daniel Tryba wrote:
> Trying to call a T.38 enabled endpoint B from an endpoint A that doesn't. This 
> results in a "488 Not Acceptable" from A.
>
> The kamailio (4.0.3) in between with topoh enabled (with mask_callid set to 1. 
> Kamailio ACKs the 488 to A, but the ACK has the wrong (masked) Call-ID, 
> resulting in the ACK to A being ignored, A keeps sending 488 at intervals 
> before just dropping the call.
>
> My understanding is the Call-ID in the ACK has to be the same as the Call-ID 
> from the 488. But instead of sending the unmasked Call-ID used in all other 
> messages between A and Kamailio, the ACK contains the masked Call-ID used in 
> all messagea between A and Kamailio.
>
> I can't find a bug report relating to this. Is this a known feature or maybe 
> fixed in newer versions?
>
> A->Kamailio
> SIP/2.0 488 Not acceptable here.
> Via: SIP/2.0/UDP 
> 109.235.32.40;branch=z9hG4bKf91a.c6c88747.0;received=109.235.32.40.
> Via: SIP/2.0/UDP 172.19.162.1;branch=pocos-
> rS4MusXox1l5QHyNxRy6uAXsEOdsxidSEAktxGZKWgeKCgeS-
> RrKEAy057Nl9DEpWpefZD6AhGtwWDJjEqeuEAZgZs5iZA7*.
> From: <sip:+31880100799 at sip.pocos.nl:5060>;tag=as3869fe2a.
> To: "+31880100705" <sip:+31880100705 at sip.pocos.nl>;tag=as1b0b8097.
> Call-ID: 0b5946b977210450571f767a19cd6fa0 at 99sip.pocos.nl.
> CSeq: 102 INVITE.
>
>
> Kamailio<-A
> ACK sip:+31880100705 at 109.235.32.48 SIP/2.0.
> Via: SIP/2.0/UDP 109.235.32.40;branch=z9hG4bKf91a.c6c88747.0.
> Max-Forwards: 16.
> From: <sip:+31880100799 at sip.pocos.nl:5060>;tag=as3869fe2a.
> To: "+31880100705" <sip:+31880100705 at sip.pocos.nl>;tag=as1b0b8097.
> Call-ID: !!:xqXtWRMpZAngEsX3xGMtxGrgxDZgEA9JxR4AzGz8ZRIyWR4sh.yomqlACgxoC8K*.
> CSeq: 102 ACK.
>
>

-- 
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda