All 3 of your options are technocally correct for both questions, however I don't know if the lab grading has a preference for which one if you have to indicate the line within the trace using arrows <<<<<<
I would personally use the first line of the header for tcp (your option 1) and either the content type sdp (your option 2) if my explanation was vague saying "sdp in invite shows eo" or i would use the "m" line of the sdp itself if saying "these codec (s) are offered in the invite showing eo." I would not use content length because the other two are more specific, just my opinion (hopefully this works out in my next lab). -Justin (Sent from my phone, please excuse and/or laugh at any typos.) On Nov 13, 2013 12:08 AM, "IE Target" <myfrnd...@gmail.com> wrote: > What proves TCP > > 1)Outgoing SIP TCP > > or > > 2)transport = tcp > > or > 3) VIA > > > What proves > > Early Offer > > 1)content-length > or > 2)content type > or > > 3)SDP itself > > Outgoing SIP TCP message to 157.26.1.253 on port 5060 index 1 > INVITE sip:321234567890@157.26.1.253:5060 SIP/2.0 > Date: Tue, 12 Nov 2013 18:36:17 GMT > Allow: INVITE, OPTIONS, INFO, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, > SUBSCRIBE, NOTIFY > From: "HQ Phone 1" <sip:2001@142.100.64.12 > >;tag=2af0b7a6-cadd-470e-807f-59a95570f443-34173098 > Allow-Events: presence, kpml > P-Asserted-Identity: "HQ Phone 1" <sip:2001@142.100.64.12> > Supported: timer,resource-priority,replaces > Min-SE: 1800 > Remote-Party-ID: "HQ Phone 1" <sip:2001@142.100.64.12 > >;party=calling;screen=yes;privacy=off > Content-Length: 214 > User-Agent: Cisco-CUCM7.0 > To: <sip:321234567890@157.26.1.253> > Contact: <sip:2001@142.100.64.12:5060;transport=tcp> > Expires: 180 > Content-Type: application/sdp > Call-ID: 4fbd2c00-28217521-1-c40648e@142.100.64.12 > Via: SIP/2.0/TCP 142.100.64.12:5060;branch=z9hG4bK05cf14a0d > CSeq: 101 INVITE > Session-Expires: 1800 > Max-Forwards: 70 > > v=0 > o=CiscoSystemsCCM-SIP 2000 1 IN IP4 142.100.64.12 > s=SIP Call > c=IN IP4 142.100.64.12 > t=0 0 > m=audio 24578 RTP/AVP 0 101 > a=rtpmap:0 PCMU/8000 > a=ptime:20 > a=rtpmap:101 telephone-event/8000 > a=fmtp:101 0-15 > > > _______________________________________________ > Free CCIE R&S, Collaboration, Data Center, Wireless & Security Videos :: > > iPexpert on YouTube: www.youtube.com/ipexpertinc >
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