exten => 100,1,Dial(SIP/user1)
exten => 200,1,Dial(SIP/user2)
exten => 611,1,Echo()
exten => 612,1,Answer()
exten => 612,2,Wait(1.5)
exten => 612,3,SayUnixTime(,,AdBY R)
exten => 612,4,Hangup()