I am the assigned Gen-ART reviewer for this draft. For background on Gen-ART, please see the FAQ at < http://wiki.tools.ietf.org/area/gen/trac/wiki/GenArtfaq>. Please resolve these comments along with any other Last Call comments you may receive. Document: draft-ietf-avtcore-clksrc-09 Reviewer: Scott Brim Review Date: 2014-01-13 IETF LC End Date: 2014-01-16 IESG Telechat date: (if known) Summary: Ready with a minor issue Major issues: Minor issues: In 6.1.2 and 6.1.3: "If the answerer rejects the offer because the available reference clocks are incompatible, the rejection MUST contain at least one timestamp reference clock specification usable by the answerer." If the answerer suggests a clock that is not among those offered, what happens next? The offerer could abort, but could it start over and use what the answerer suggested? That's not documented -- is it obvious to those more familiar with SDP? Scott