@Kevin_Z Thank for the replay Kevin. My VoIP provider is BSNL India. I have used the same details given by them only. And now they says, the issue may be with the device firmware as they found this...

@Kevin_Z I'm facing the same issue with different error code. Please help.. Tags: #VoIP #Installation #Network Connectivity Model: XX530v Hardware Version: V1 Firmware Version: 0.7.0 3.0.0 v6096.0 TP...