Hi, I have a setup something like the following: [callcenter] <--IAX2--> [voip-server] <---IAX2--> [LD provider] I also have PRIs going in and out of [voip-server]. The problem is with calls going between [callcenter] and [voip-server]. When a call comes in the PRI to [voip-server] and then to [callcenter], all is fine. When a call goes out to [voip-server] and then to PRI, all is fine. When a call goes out to [voip-server] and then to [LD provider], all is fine, until I put the person on hold. When I pick them back up, sometimes outbound audio is dead (the person I called can not hear me), however inbound audio is fine (I can hear them). Does anyone have any thoughts on what this issue might be?