Hello,
I guess this is simple to resolve but I am still newbie on asterisk 
i have this dial-plan. If the caller hang up the phone first, never goes to exten => s-ANSWER.
If the internal agent hang up before the caller,the dial-plan is working fine and executes s-ANSWER
What I need is to execute a curl only if-and-only the call is answered.
Thank you all for your kind support!
Regards,
Vangelis
[macro-uridial]
exten => s,1,Answer()
exten => s,2,Background(music);
exten => s,3,Set(thedid=${SIP_HEADER(To)})
exten => s,4,Set(thedid=${CUT(thedid,@,1)})
exten => s,5,Set(thedid=${CUT(thedid,:,2)})
exten => s,6,Set(extredir=${CURL(http://www.xxx.com/restvoip.php?sid=7&bid=163&action=1&uid=${UNIQUEID}&cid=${CHANNEL}&num=${CALLERID(num)}&did=${thedid})})
exten => s,7,Set(i=0)
exten => s,8,Set(i=$[${i}+1])
exten => s,9,Set(ext=${CUT(extredir,"~",${i})})
exten => s,10,GotoIf($["${ext}" = ""] ? 17:11)
exten => s,11,Dial(SIP/${ext},15,g)
exten => s,12,Wait(1)
exten => s,13,Set(pseudodid=${DIALEDPEERNAME})
exten => s,14,Set(pseudodid=${CUT(pseudodid,-,1)})
exten => s,15,Set(pseudodid=${CUT(pseudodid,/,2)})
exten => s,16,Goto(s-${DIALSTATUS},1)
exten => s,17,Background(no-available);
exten => s,18,Hangup()
exten => s-ANSWER,1,Set(extredir=${CURL(http://www.xxx.com/restvoip.php?sid=7&bid=163&action=2&uid=${UNIQUEID}&cid=${CHANNEL}&num=${CALLERID(num)}&ext=${pseudodid}&cabid=${ext}&di$
exten => s-NOANSWER,1,Goto(macro-uridial,s,8)
exten => s-CHANUNAVAIL,1,Goto(macro-uridial,s,8)
exten => s-BUSY,1,Goto(macro-uridial,s,8)