- Firmware version: ALL
- Model: U-Series & Gateways
The problem happened on a U100. The SIP trunk status showed the "Wait for Authorization".
The CLI log shows the "nonce" has wrap up to next line which is not standard or common.
The phenomenon mostly happens when soft switch on other side is Huawei or ZTE.
Enable the Pedantic option: SIP settings> Advanced> Pedantic> yes
This option would increase the compatibility for non-Standard headers in the SIP packts.