Invalid CRN passed to acceptISDN

I got the follow log,what is the problem?
 
 
extraitPossibilite : Possibilite parsing 
No commande Possibilite
dx(2): Invalid CRN passed to acceptISDN, crn=80000007
dx(2): error accepting
dx(14): ring
dx(14): attach script
dx(2); cc_ReleaseCallFunction was successful
dx(2): idle
dx(14): step 23eb answer()
dx(14): answer
dx(2): setup waiting
dx(2): isdn restart
dx(2): isdn waiting
dx(14); TaskFailCan not accept event in current state
dx(14): exit
dx(14): script exiting
dx(14): hangup
dx(14): Invalid CRN, hangupISDN =-2147483617
dx(14): detach script
dx(14); cc_ReleaseCallFunction was successful
dx(14): idle
dx(14): setup waiting
dx(14): isdn restart
dx(14): isdn waiting