[SIPForum-discussion] Problem with SIP ACK to HOLD REQUEST

[Antony Papageorgiou]

Hello all,

I'm having trouble with an ACK. It seems that it is
sent to the phone but the phone does not change state.

The SIP dialog refers to a HOLD request:
 
SIP SM -->INVITE(SDP inactive) --> B

B --> 200 OK (sdp inactive) --> SIP SM

SIP MS --> ACK --> B

I see that this ACK has duplicate "Date" and
"Max-Forwards" fields. Does anyone know if this is
causing the phone to discard the ACK?

ACK sip:2104211006 at 10.4.211.206:5060;transport=udp
SIP/2.0

To: 2104211006
<sip:2104211006 at 10.4.211.206:5060>;tag=3354741229
From: <sip:2104211003 at 10.4.211.102>;tag=snl_0008345123
Call-ID:
NSNSIP-ad4040a-ad4040a-1-11-1206526294-48361-1206574655
CSeq: 1236 ACK
Contact:
<sip:2104211003 at 10.4.211.102:5060;transport=udp;maddr=10.4.211.102>
Via: SIP/2.0/UDP
10.4.211.102:5060;branch=z9hG4bKNSNSIP-ad4040a-ad4040a-1-23412534
Date: Wed, 26 Mar 2008 10:11:38 GMT 
Max-Forwards: 69
Date: Wed, 26 Mar 2008 10:11:38 GMT 
Max-Forwards: 69
Content-Length: 0

 


      
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