Hi Everyone,
We have lots of numbers come in on our SIP, we are have problems with just one number that during busy periods (intermitant) generagtes a ISDN Code 57 and 403 Forbidden error in the logs, like all our numbers this points to a Cisco CCX script, nothing different to all our other scripts that work fine. I can see lots of the 403 errors on the logs on the SBC but cant generate them myself (yet) what could be the cause of this, if you look online it says :-
Cause No. 57 - bearer capability not authorized [Q.850]
This cause indicates that the user has requested a bearer capability which is implemented by the equipment which generated this cause but the user is not authorized to use.
What does this actually mean, where could the error be come from ? At first we thought maybe users were getting a busy tone, but from speaking to people we dont think they are we think the call is in some way failing.
Any ideas where to look ?
Many Thanks
