CCM 4.13. The main site is ASA 5520 and connect to ASA 5505 (branch site with Static ip address DSL), EZVPN connect between each other.
The ip phone connect to ASA 5505.
It doesnt matter which side calls another side, it has one-way voice.
The funny thing is that I got two-way voice if I put the call on-hold, then resume again.
Everyone has idea?? Thanks in advance.