All external calls drop(internals are fine) and found a CCM trace as follows. I don't know if this related to the call drop. Any idea for what meaning of that and relationship for all external call drop ?
CCM|H225 - successful deletion of stats for H323 device '192.168.9.19'. ErrCode=0, statIndex=1|<CLID::StandAloneCluster><NID::192.168.9.22>
** ICS7750, CCM 3.3(2)spC, MRP 12.2(13)ZH2, T1 trunk.
** MRP=192.168.9.19, CCM=192.168.9.22