We have a customer that has a 908 2nd Gen running the firmware R10.9.4.E.. The PRI is working but some random calls seem to be dropping. The call coming in VIA a SIP TRUNK to the 908 and then routing via the PRI on the DSX1 port. We have been able to catch these logs when the inbound call fails.
OutboundDeliver - rcvd unexpected CallRelease
Any ideas on these errors has anyone ever ran into this?
Cause No. 57 - bearer capability not authorized.
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.
Could be a setting of 3.1 audio vs. speech on the PBX. Could also be an ISDN switch type mismatch.