Urgent handler
    -- Executing Goto("SIP/7218002-1cd5", "internal|201") in new stack
Urgent handler
    -- Goto (public-sip,internal,201)
Urgent handler
Jan 15 19:25:04 WARNING[25911]: pbx.c:1878 ast_pbx_run: Channel 'SIP/7218002-1cd5' sent into invalid extension 'internal' in context 'public-sip', but no invalid handler