We appear to have a found an issue with incoming SIP calls to our 3CX PBX. If we connect an incoming SIP calls to our digital receptionist (in 3CX), the calls are handled appropriately. This results in calls then being forwarded to either a hunt group, or ring all group, after callers select an option. We found it was taking 20-30 seconds for our callers to use the digital receptionist and then get put through to a call handler. To save time we therefore decided to put incoming calls directly through to the same groups (i.e. omitting the digital receptionist). Unfortunately, when we do this the incoming calls are not precessed correctly. In the hunt group after trying the first two phones, it restarts back at the beginning of the sequence rather than continuing to the end. With the ring all group they all ring for approximately 18 seconds then the call appears to be dropped then reconnects again. If we make an incoming call directly to the same group using our VOIPtalk telephone number (i.e. land line number) , the calls are handled correctly and are not dropped after 18 seconds. It therefore appears to be a problem arising only with incoming SIP calls. I have attached a copy of a call log taken while this problem was occurring on 22/9/11. The incoming call at 13.09.46.200 was an incoming sip call during which the hunt group did not work as configured. The incoming call at 126.96.36.1999 was made direct to VOIPTalk landline number and followed the hunt group correctly. The settings on our 3CX system remained the same. Does anyone have any suggestions what may be happening? Thanks for any feedback.