Voip.ms (registered, not SIP auth)
Polycom VVX501 (5.4.6)
711 U codec for phones and SipX
I could not isolate the issue I had yesterday with the one way comms issue (knew it was NAT, but could not understand what to do with the trace generated), so I went to authenticated setup with Voip.ms, which got us to to work with inbound calls.
Now a new problem. Outbound calls. When dialed, the call completes and the recipient phone gets called (tested with mobile on site), BUT the calling phone goes immediately to a rapid busy signal even though the recipient call can be answered.
Any comments on what to look for with this problem?