Phantom call


for the last 2 days, one user receive a call from asterisk every 15min.

I got this in the console:

– Executing [3653@default:1] ChanIsAvail(“SIP/”, “SIP/StGedeonvoip1&SIP/dcvoip3”) in new stack
– Executing [3653@default:2] NoOp(“SIP/”, “SIP/StGedeonvoip1-09b3fe48”) in new stack
– Executing [3653@default:3] Set(“SIP/”, “channel=SIP/StGedeonvoip1”) in new stack
– Executing [3653@default:4] Dial(“SIP/”, “SIP/StGedeonvoip1/3653”) in new stack
– Called StGedeonvoip1/3653
– SIP/StGedeonvoip1-09b413d8 is ringing
– SIP/StGedeonvoip1-09b413d8 answered SIP/
– Native bridging SIP/ and SIP/StGedeonvoip1-09b413d8
– Got SIP response 500 “Internal Server Error” back from
== Spawn extension (default, 3653, 4) exited non-zero on ‘SIP/’

To me , I understand that asterisk is calling my caallmanager ?

I’m new to asterisk, an idea ro tips to give me?