Sep 17 16:03:28 WARNING[1209]: pbx.c:1293 pbx_extension_helper: No application 'Dial(SIP/${EXTEN}@iphone}' for extension (default, 14024645971, 1)
  == Spawn extension (default, 14024645971, 1) exited non-zero on 'SIP/712-19fa'
Sep 17 16:13:32 WARNING[1209]: pbx.c:1293 pbx_extension_helper: No application 'Dial(SIP/${EXTEN}@iphone}' for extension (default, 14024645971, 1)
  == Spawn extension (default, 14024645971, 1) exited non-zero on 'SIP/712-a80f'
    -- Unregistered SIP '712'
    -- Registered SIP '712' at 202.202.202.93 port 5060 expires 120
    -- Saved useragent "SJLabs-SJphone/1.40.258" for peer 712
Sep 17 16:18:50 WARNING[1209]: pbx.c:1293 pbx_extension_helper: No application 'Dial(SIP/${EXTEN}@iphone}' for extension (default, 14024645971, 1)
  == Spawn extension (default, 14024645971, 1) exited non-zero on 'SIP/712-f038'