Executing Dial("Zap/1-1", "SIP/deltadraco-out/5143121234")
    -- Called deltadraco-out/5143121234
    -- Channel 0/1, span 1 got hangup
May 11 10:19:32 WARNING[3064576944]: chan_zap.c:8136 pri_dchannel: Ring requested on channel 0/1 already in use on span 1.  Hanging up owner.