(note i havent used asterrisk, i magage switchvox pbxes, based on asterisk)
g729 is normaly the issue as digum(i think) need you have a licence per channel (concurrent call)
however you should be able to have the phone itself set to g729 you can use bypass mode and not pay for the licence.
I could be wrong however i think asterisk is the same.
g729 is normaly the issue as digum(i think) need you have a licence per channel (concurrent call)
however you should be able to have the phone itself set to g729 you can use bypass mode and not pay for the licence.
I could be wrong however i think asterisk is the same.