We are using a Balance 380 with 80+ VoIP phones from a hosted provider. I’d say at least once a week we have a phone that gets a “URL Call disabled” error message. Our VoIP provider is telling us it is the Peplink and that the following transaction takes place:
- Phone submits a registration request
- Provider sends a UN/PW challenge
- Instead of username /password , Phone came back with another register ( The challenge is not reaching phone )
Our 380 is set up with SIP to over a second WAN port with highest priority using port 5060.
I had thought there might be port saturation but would like to get additional input from other users before opening up more ports.