I have tried above procedure.but still pabx takes call on half bell or some time takes calls on one bell.
But, I have carried out solution like these.
ADD-ACTDA:STN,293,FWD,STATIONV,CFNR,GEN,VCE,884000; (884000 Xpression)
ADD-ZIEL:FWD,293,VCE,884000,,CFNR,INT,SYSTEM;
cha-ctime:cp1,NOANS=7 (SEC)...