Does anyone know if SUBSCRIBE/NOTIFY has been implemented in the 79XX SIP image (RFC 3265)? I have looked eveywhere and can't find any info regarding this. When looking at the SEP*.conf.xml file, I see that on a per line basis I can specify the username, password and some line display options only. There are no options to subscribe to other lines for call presence.
I understand that CCM supports presence and SUBSCRIBE/NOTIFY. But, looking at this from the phone only, how do you edit the SEP*.conf.xml file to SUBSCRIBE to various line states?