Ok here is the brief:
Having issue in paging while MS is un-reachable…While Gs is enabled..
MSC is sending paging-request to SGSN..SGSN is triggering CS-paging message..
But Not generating any message of Paging-reject to MSC..
& the issue is that MSC is playing Number Does not exist Announcement…!!
May be some issue with timers in either side…But not sure Whos responsible…!!!