Both of them are correct. In the first ACK the user agent correctly recognized that the next proxy server is loose router and put the Contact from 200 OK into the Request-URI of ACK.

In the other example, the user agent did not recognized that the proxy is loose router (or does not implement loose routing) and behaves a specificied in RFC2543, it puts the content of the Route header field into the Request-URI and the Contact from 200 OK is put into another Route header field.

Both cases should work.

Jan.

On 02-09 17:49, Nicolas RUIZ wrote:

HI,

I have an interconexion with a proxy-server registrar IPTEL to a Cisco GATEWAY AS5300 for the PSTN.

When I make a call by a Cisco IP phone, I have no problem but when I make a call with a call-box(Same as Cisco ATA) or a softphone Xpro (XTEN), I can speak 20 s and after the call is cut.

I have analysed this problem, the problem is after the SIP ringing frame, the softphone send a SIP frame ACK with a bad request-line.

IP ADDRESS 80.118.128.1 : CISCO AS5300 GATEWAY

IP ADDRESS 80.118.128.5 : SERVER IPTEL

The RED parameter in the first DEBUG is BAD, he as to be as the same of the second debug.

That's my debug of the SOFT PHONE: BAD ACKNOWLEDGE

#########################################################

U 80.118.128.1:5060 -> 80.118.128.5:5060

SIP/2.0 200 OK..Via: SIP/2.0/UDP 80.118.128.5;branch=z9hG4bKcce9.7a6be6f3.0,SIP/2.0/UDP 62.39.69.2:21791;rport=21791;branch=z9hG4bKB0A9B5A4D70A4FF8A745CCDD512FED41. .Fr

om: Nicolas RUIZ sip:0170708661@sip.vivaction.net;tag=1756293558..To: sip:0156384185@sip.vivaction.net;tag=E855BD4-163A..Date: Thu, 02 Sep 2004 12:39:19 GMT..Call-

ID: 475E7EC7-5CA5-457D-8F0D-BCF6B8FA6209@192.168.18.21..Server: Cisco-SIPGateway/IOS-12.x..CSeq: 24531 INVITE..Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET,

REFER, SUBSCRIBE, NOTIFY, INFO..Allow-Events: telephone-event..Contact: sip:0156384185@80.118.128.1:5060..Record-Route: <sip:0156384185@80.118.128.5;ftag=1756293558;

lr=on>..Content-Type: application/sdp..Content-Length: 256....v=0..o=CiscoSystemsSIP-GW-UserAgent 16 8937 IN IP4 80.118.128.1..s=SIP Call..c=IN IP4 80.118.128.1..t=0 0

..m=audio 18194 RTP/AVP 18 101..c=IN IP4 80.118.128.1..a=rtpmap:18 G729/8000..a=fmtp:18 annexb=no..a=rtpmap:101 telephone-event/8000..a=fmtp:101 0-15..

#

U 80.118.128.5:5060 -> 62.39.69.2:21791

SIP/2.0 200 OK..Via: SIP/2.0/UDP 62.39.69.2:21791;rport=21791;branch=z9hG4bKB0A9B5A4D70A4FF8A745CCDD512FED41. .From: Nicolas RUIZ sip:0170708661@sip.vivaction.net;tag

=1756293558..To: sip:0156384185@sip.vivaction.net;tag=E855BD4-163A..Date: Thu, 02 Sep 2004 12:39:19 GMT..Call-ID: 475E7EC7-5CA5-457D-8F0D-BCF6B8FA6209@192.168.18.21.

.Server: Cisco-SIPGateway/IOS-12.x..CSeq: 24531 INVITE..Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO..Allow-Events: telephone

-event..Contact: sip:0156384185@80.118.128.1:5060..Record-Route: sip:0156384185@80.118.128.5;ftag=1756293558;lr=on..Content-Type: application/sdp..Content-Length:

256....v=0..o=CiscoSystemsSIP-GW-UserAgent 16 8937 IN IP4 80.118.128.1..s=SIP Call..c=IN IP4 80.118.128.1..t=0 0..m=audio 18194 RTP/AVP 18 101..c=IN IP4 80.118.128.1..

a=rtpmap:18 G729/8000..a=fmtp:18 annexb=no..a=rtpmap:101 telephone-event/8000..a=fmtp:101 0-15..

####

U 62.39.69.2:21791 -> 80.118.128.5:5060

ACK sip:0156384185@80.118.128.1:5060 SIP/2.0..Via: SIP/2.0/UDP 62.39.69.2:21791;rport;branch=z9hG4bKDDE6A61442CF4B3985D47F7A633E9A9F..From: Nicolas RUIZ <sip:017070866

1@sip.vivaction.net>;tag=1756293558..To: sip:0156384185@sip.vivaction.net;tag=E855BD4-163A..Contact: sip:0170708661@62.39.69.2:21791..Route: <sip:0156384185@80.118

.128.5;ftag=1756293558;lr=on>..Call-ID: 475E7EC7-5CA5-457D-8F0D-BCF6B8FA6209@192.168.18.21..CSeq: 24531 ACK..Max-Forwards: 70..Content-Length: 0....

######

That's my debug of the IP PHONE: GOOD ACKNOWLEDGE

U 80.118.128.1:5060 -> 80.118.128.5:5060

SIP/2.0 200 OK..Via: SIP/2.0/UDP 80.118.128.5;branch=z9hG4bK119a.2eb3c633.0,SIP/2.0/UDP 62.39.70.245:20105;branch=z9hG4bK21610a53..From: "ip.phone" <sip:0170708662@sip

.vivaction.net>;tag=000f8f58915f002e0e896df1-21abefc7..To: sip:0156384185@sip.vivaction.net;tag=EB213D4-226C..Date: Thu, 02 Sep 2004 13:28:10 GMT..Call-ID: 000f8f58-

915f0025-7e34225d-1cdf9dae@192.168.254.12..Server: Cisco-SIPGateway/IOS-12.x..CSeq: 102 INVITE..Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIB

E, NOTIFY, INFO..Allow-Events: telephone-event..Contact: sip:0156384185@80.118.128.1:5060..Record-Route: <sip:0156384185@80.118.128.5;ftag=000f8f58915f002e0e896df1-2

1abefc7;lr=on>..Content-Type: application/sdp..Content-Length: 258....v=0..o=CiscoSystemsSIP-GW-UserAgent 1735 3645 IN IP4 80.118.128.1..s=SIP Call..c=IN IP4 80.118.12

8.1..t=0 0..m=audio 18760 RTP/AVP 18 101..c=IN IP4 80.118.128.1..a=rtpmap:18 G729/8000..a=fmtp:18 annexb=no..a=rtpmap:101 telephone-event/8000..a=fmtp:101 0-15..

#

U 80.118.128.5:5060 -> 62.39.70.245:20105

SIP/2.0 200 OK..Via: SIP/2.0/UDP 62.39.70.245:20105;branch=z9hG4bK21610a53..From: "ip.phone" sip:0170708662@sip.vivaction.net;tag=000f8f58915f002e0e896df1-21abefc7..

To: sip:0156384185@sip.vivaction.net;tag=EB213D4-226C..Date: Thu, 02 Sep 2004 13:28:10 GMT..Call-ID: 000f8f58-915f0025-7e34225d-1cdf9dae@192.168.254.12..Server: Cisc

o-SIPGateway/IOS-12.x..CSeq: 102 INVITE..Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO..Allow-Events: telephone-event..Contact

: sip:0156384185@80.118.128.1:5060..Record-Route: sip:0156384185@80.118.128.5;ftag=000f8f58915f002e0e896df1-21abefc7;lr=on.. Content-Type: application/sdp..Content-

Length: 258....v=0..o=CiscoSystemsSIP-GW-UserAgent 1735 3645 IN IP4 80.118.128.1..s=SIP Call..c=IN IP4 80.118.128.1..t=0 0..m=audio 18760 RTP/AVP 18 101..c=IN IP4 80.1

18.128.1..a=rtpmap:18 G729/8000..a=fmtp:18 annexb=no..a=rtpmap:101 telephone-event/8000..a=fmtp:101 0-15..

####

U 62.39.70.245:20600 -> 80.118.128.5:5060

ACK sip:0156384185@80.118.128.5:5060;ftag=000f8f58915f002e0e896df1-21abefc7;lr=o n SIP/2.0..Via: SIP/2.0/UDP 62.39.70.245:20105;branch=z9hG4bK47003517..From: "ip.phone"

sip:0170708662@sip.vivaction.net;tag=000f8f58915f002e0e896df1-21abefc7..To : sip:0156384185@sip.vivaction.net;tag=EB213D4-226C..Call-ID: 000f8f58-915f0025-7e34225d

-1cdf9dae@192.168.254.12..CSeq: 102 ACK..User-Agent: CSCO/6..Route: sip:0156384185@80.118.128.1:5060..Content-Length: 0....

#

U 80.118.128.5:5060 -> 80.118.128.1:5060

ACK sip:0156384185@80.118.128.1:5060 SIP/2.0..Max-Forwards: 10..Record-Route: sip:0156384185@80.118.128.5;ftag=000f8f58915f002e0e896df1-21abefc7;lr=on.. Via: SIP/2.0/

UDP 80.118.128.5;branch=0..Via: SIP/2.0/UDP 62.39.70.245:20105;branch=z9hG4bK47003517..From: "ip.phone" sip:0170708662@sip.vivaction.net;tag=000f8f58915f002e0e896df1

-21abefc7..To: sip:0156384185@sip.vivaction.net;tag=EB213D4-226C..Call-ID: 000f8f58-915f0025-7e34225d-1cdf9dae@192.168.254.12..CSeq: 102 ACK..User-Agent: CSCO/6..Con

tent-Length: 0....

Thans for your help

Nicolas RUIZ

PARIS, FRANCE

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