Registration failures and NAT
Phones register, then drop off. The binding expired before the phone refreshed it.
Writing
sip
SIP call flow for troubleshooting
You do not need to know SIP thoroughly. You need to know where in the exchange it stopped.
Writing
Phones register, then drop off. The binding expired before the phone refreshed it.
You do not need to know SIP thoroughly. You need to know where in the exchange it stopped.