[Asterisk-Users] asterisk <-> stanaphone?

[Jerry Glomph Black]

I had a working 2-way SIP connection running until about 2 days ago, now my 
outbound calls are promptly blocked with a "403 Forbidden" error.   Inbound 
still functions OK.

Perhaps they are fingerprinting
and blocking Asterisk access (I hope not).  They do not answer their support 
mail, or questions on their own forum.

I'm sure there are other Asteriskers out there who have 
encountered (and solved!) this problem.

Thanks in advance,
Dr G