I have a stange problem. When trying to internetwork between a ccme and a callmanager. I noticed that when phones connected to my callmanager cluster call each other , they do it at g711alaw, then as soon as the called party picks up they negociate at g.711ulaw. I saw this by pressing ? twice on an ip phone.
My question is that why do phones try to negociate at g711alaw when the phone is ringing?