Asterisk output when calling echo service

  == Using SIP RTP CoS mark 5
       > Found no rows [select dial from dialdata_table where exten = "2600"]
    -- Executing [2600@phones:1] Set("SIP/IMSIXXXXXXXXXXXXXXX-00000003", "Name=") in new stack
    -- Executing [2600@phones:2] GotoIf("SIP/IMSIXXXXXXXXXXXXXXX-00000003", "1 ?outbound-trunk,2600,1") in new stack
    -- Goto (outbound-trunk,2600,1)
[Aug 29 21:31:59] WARNING[5948][C-00000002]: pbx.c:6647 __ast_pbx_run: Channel 'SIP/IMSIXXXXXXXXXX-00000003' sent to invalid extension but no invalid handler: context,exten,priority=outbound-trunk,2600,1