Facing problem in geting ICall pointer in brew
 

ITELEPHONE_GetCalls(pMe->pITel,&pMe->co,sizeof((pMe->co)))
am using this api to get Call Descriptor and puting it in
ICALLMGR_GetCall(pMe->pICalMg,pMe->cd,( ICall **)&pMe->pICall
to get ICall pointer in Brew.
but am geting pMe->pICall as null.
i had set all privileges,dependncies and asecc control list.
can anybody help me regarding this?