IPOV1 R8.0.18
Incoming call and Outcoming call : Trunk SIP
Phone : 5402 (Numeric), 5602 (IP), 1616 (IP)
Sometimes, the caller does not hear the customers..with 5402 avaya OR 5602, so there are no problem on network lan.
Trunk SIP it works well for 1 year..i dont understand.
This problem may...