I think that Skype-Asterisk integration will be the right thing (there you can access skype from all telephony devices under LMCE).
Regarding video phone :
- I think the proper way would be to enhance linphone integration to video level, but we would also need the things to be prepared on Orbiter's side (screen or set of screens for video phone)
- currently you could also use Mythphone. I haven't used it for a long time, but worked at time of my testing - it's SIP compliant video phone. http://www.mythtv.org/wiki/MythPhone
Main integration problem would be cause in current state of Mythtv integration AFAIK it can only be used for outgoing calls. To answer incoming calls it should run in background all the time and I'm not sure if that is possible.
Question for MYTHTV & LMCE gurus: Do we have any newer solution to this problem ?
- Currently you can use other Video phones in LMCE system normally, cause Asterisk supports video calls - but you have to have both endpoints capable of video telephony...