Hi,
I have a Cisco ISR 2801 with CME 8.5 and configured a SIP-Trunk to a ISP (sipgate.de).
This trunk works for inbound call, but not for outbound calls.
If I do an outgoing calls, I get the following SIP-Response from the provider:
407 Proxy Authentication Required
After this, CME does a new invite but without proxy-authentication.
for a "debug ccsip message" output, see attachment
has anyone an idea?
regards
Matthias