Hello,
I have an OBI202 working in a windfarm substation in a remote location. It has been fine for the past 5 years. However last week one of the two lines registered on it (both from same provider) started rejecting inbound calls with a SIP 503 message.
Both lines are fine for outbound.
Has anyone seen this before ? Any ideas how to troubleshoot ? The provider simply says that the endpoint is rejecting the call.
Thanks in advance.
Gavin