Hi, I am using PjSIP 1.4.5 with APS for 360 rd Ed and VAS for s60 3rd Fp1 & Fp2 devices. My problem is ring back is working perfectly when i use PjSIP 1.4.5 with APS enabled but not in PjSIP 1.4.5 with VAS enabled. In PjSIP 1.4.5 VAS Enabled, i am starting ring back while call is initiated and stops ring back when end user accepts the call, voice is not transfered at both the ends in this case.If i comment the ring back start & stop methods and initiate the call voice is transfered and works perfectly. But this is not the case with APS enabled, ring back starts & stops properly and voice get transfered at both the ends properly. What could be the problem ?? Ring back should be handled differently while using VAS ?? Please help... -- Thanks, Srivatsan.D,