Can any one tell me the difference between the BIB and Record
features supported for a phone. isn't BIB a prerequisite for recording
using SIP trunk???
 
Explanation
 
to check the system reports:
navagation -> Cisco Unified Reporting
click on system reports a side pane appears from the side pane choose " unified CM phone Feature List"
 
in the features there are 2 different features one called Record and the other called BIB (built in bridge).
 
in
the Cisco documentation for recording.it is said that in order to be
able to use SIP Trunk to record for a phone we need this phone to
support the BIB feature in order to fork the stream and froward one to
the recorder. 
after checking the list of phones supported by the
CM we found two features BIB and record. and the list of supported
phones in each one is different.
what do we need in order to be
able to record for a phone, support for record of for BIB or both and
what is the difference between both features???