Islam,
I think your issue would be resolved by setting 'Channel IE Type' on the E1 port in CuCM to 'Continuous' and reset the gateway if that doesn't work try 'Timeslot'
Have a look at great the interoperatbilty guide at:-
http://www.cisco.com/en/US/solutions/collateral/ns340/ns414/ns728/ns784/703946.pdf
and the notes on this fourm post:-
https://supportforums.cisco.com/thread/2151370
Hope this helps, please give us an update on your progress.
Good luck,
Craig
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