[Serusers] PRACK

[Jiri Kuthan]

Greg, 

the email exchange was too fast for me -- is there any open issue now
for which snom does not claim responsibility and the burden is on us?

-Jiri

At 03:47 AM 3/4/2003, Greg Fausak wrote:
>I copied a few SNOM phone messages to the list.
>I am having problems communicating with the
>SNOM phone.
>
>I guess it isn't working because the SNOM phone
>sends a PRACK after the 183, and the received
>OK doesn't have a 'Record-Route'.  This doesn't make
>sense to me.  I don't know why the phone is listening
>to the first OK (the OK to the PRACK) rather than the
>second OK (the OK to the INVITE).
>
>If that is the way it is then do I have the PROXY mis-configured?
>
>-----
>
>        if(method=="INVITE" | method=="BYE" | method=="PRACK")
>        {
>                log(1,"TRACE: addRecordRoute()");
>                setflag(1);
>                setflag(2);
>                addRecordRoute();
>        };
>
>        append_hf("P-hint: ATEND\r\n");
>        if(!t_relay())
>        {
>                sl_reply_error();
>                break;
>        };
>
>When I do a ngrep trace, I see the packet being relayed...
>
>----
>#
>U 2003/03/03 20:05:59.858473 216.87.145.22:5060 -> 216.87.144.203:5060
>PRACK sip:2143357976 at 216.87.144.203;branch=0 SIP/2.0.
>Via: SIP/2.0/UDP 216.87.145.22:5060;branch=z9hG4bK-bec8z5qwsbqg.
>Max-Forwards: 70.
>RAck: 5620 2 INVITE.
>From: "snom man" <sip:4695461245 at augustvoice.net>;tag=1r1bpkl72i.
>To: <sip:2143357976 at augustvoice.net;user=phone>;tag=63631E34-197C.
>Call-ID: 3c26f8de39d9-7dyvkrekeha3 at 216.87.145.22.
>CSeq: 4 PRACK.
>Route: <sip:92143357976 at 216.87.144.196:5060;user=phone>.
>Contact: <sip:4695461245 at 216.87.145.22:5060;line=1>.
>Content-Length: 0.
>Authorization: Digest
>username="4695461245",realm="augustvoice.net",nonce="3e640b3300000000dbb
>edccd04f755cac7e3b6dd55d202c9",uri="sip:",response="3693b828395cd40fe1b1
>ab5f9ad61308",algorithm=md5.
>.
>
>#
>U 2003/03/03 20:05:59.859540 216.87.144.203:5060 -> 216.87.144.196:5060
>PRACK sip:92143357976 at 216.87.144.196:5060;user=phone SIP/2.0.
>Record-Route: <sip:2143357976 at 216.87.144.203;branch=0>.
>Via: SIP/2.0/UDP 216.87.144.203;branch=z9hG4bKe44a.ff0091c4.0.
>Via: SIP/2.0/UDP 216.87.145.22:5060;branch=z9hG4bK-bec8z5qwsbqg.
>Max-Forwards: 69.
>RAck: 5620 2 INVITE.
>From: "snom man" <sip:4695461245 at augustvoice.net>;tag=1r1bpkl72i.
>To: <sip:2143357976 at augustvoice.net;user=phone>;tag=63631E34-197C.
>Call-ID: 3c26f8de39d9-7dyvkrekeha3 at 216.87.145.22.
>CSeq: 4 PRACK.
>Contact: <sip:4695461245 at 216.87.145.22:5060;line=1>.
>Content-Length: 0.
>Authorization: Digest
>username="4695461245",realm="augustvoice.net",nonce="3e640b3300000000dbb
>edccd04f755cac7e3b6dd55d202c9",uri="sip:",response="3693b828395cd40fe1b1
>ab5f9ad61308",algorithm=md5.
>P-hint: ATEND.
>.
>
>#
>U 2003/03/03 20:05:59.861477 216.87.144.196:5060 -> 216.87.144.203:5060
>SIP/2.0 200 OK.
>Via: SIP/2.0/UDP
>216.87.144.203;branch=z9hG4bKe44a.ff0091c4.0,SIP/2.0/UDP
>216.87.145.22:5060;branch=z9hG4bK-bec8z5qwsbqg.
>From: "snom man" <sip:4695461245 at augustvoice.net>;tag=1r1bpkl72i.
>To: <sip:2143357976 at augustvoice.net;user=phone>;tag=63631E34-197C.
>Date: Tue, 04 Mar 2003 02:05:59 GMT.
>Call-ID: 3c26f8de39d9-7dyvkrekeha3 at 216.87.145.22.
>Server: Cisco-SIPGateway/IOS-12.x.
>CSeq: 4 PRACK.
>Content-Length: 0.
>.
>
>#
>U 2003/03/03 20:05:59.861705 216.87.144.203:5060 -> 216.87.145.22:5060
>SIP/2.0 200 OK.
>Via:SIP/2.0/UDP 216.87.145.22:5060;branch=z9hG4bK-bec8z5qwsbqg.
>From: "snom man" <sip:4695461245 at augustvoice.net>;tag=1r1bpkl72i.
>To: <sip:2143357976 at augustvoice.net;user=phone>;tag=63631E34-197C.
>Date: Tue, 04 Mar 2003 02:05:59 GMT.
>Call-ID: 3c26f8de39d9-7dyvkrekeha3 at 216.87.145.22.
>Server: Cisco-SIPGateway/IOS-12.x.
>CSeq: 4 PRACK.
>Content-Length: 0.
>.
>
>-----
>There is a Record-route going out, but not one coming back.
>Does a Record-route need to be injected into the last
>OK back to the UA?
>
>This is too hard :-)
>
>---greg
>
>
>
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--
Jiri Kuthan            http://iptel.org/~jiri/