Add the following to /etc/asterisk/sip_general_custom.conf
videosupport=yes
allow=h261
allow=h263
allow=h263p
For each extension that will use video, diallow all codecs, then allow needed audio codecs (usually ulaw, alaw, gsm, speex) and allow needed video codecs (usually h261, h263, h263p). Through the GUI, this can be accomplished by separating each codec with and ampersand character ‘ & ‘.
Asterisk 1.4 cannot negotiate the video codec as its support for video is really pass-thru. Becuase of this, video UAs need to have codecs matched manually to establish a video call.
