there are lot of call request in dialer cdr, but not origina

there are lot of call request in dialer cdr, but there is no debugging in freeswitch cli. in newfies Cli i got this error
3] [2011-11-30 08:48:07,235: ERROR/PoolWorker-3] dialer_cdr.tasks.init_callrequest[c7c173ee-c75c-40f1-98b2-199639d6d488]: error : call_plivo
[2011-11-30 08:48:07,330: INFO/MainProcess] Task dialer_cdr.tasks.init_callrequest[c7c173ee-c75c-40f1-98b2-199639d6d488] succeeded in 0.226336956024s: False
[2011-11-30 08:48:07,333: INFO/MainProcess] Task dialer_cdr.tasks.init_callrequest[ba50b650-49ec-41e1-8304-e3ae855ceae3] succeeded in 0.225730895996s: False
[2011-11-30 08:48:07,337: DEBUG/MainProcess] Task accepted: dialer_cdr.tasks.init_callrequest[272fc7a1-5462-4646-9e78-682ddaaf2aa7] pid:2671
[2011-11-30 08:48:07,344: WARNING/PoolWorker-2] [2011-11-30 08:48:07,343: INFO/PoolWorker-2] dialer_cdr.tasks.init_callrequest[272fc7a1-5462-4646-9e78-682ddaaf2aa7]: TASK :: init_callrequest - status = 1
[2011-11-30 08:48:07,369: WARNING/PoolWorker-2] [2011-11-30 08:48:07,368: INFO/PoolWorker-2] dialer_cdr.tasks.init_callrequest[272fc7a1-5462-4646-9e78-682ddaaf2aa7]: dialout_phone_number : 9447004284
[2011-11-30 08:48:07,371: WARNING/PoolWorker-2] {'To': u'9447004284', 'GatewayRetries': '1', 'From': '8888888888', 'Gateways': u'sofia/gateway/myprovider', 'AnswerUrl': 'http://192.168.1.15:8008/api/v1/answercall/', 'ExtraDialString': 'bridge_early_media=true,hangup_after_bridge=true', 'HangupUrl': 'http://192.168.1.15:8008/api/v1/hangupcall/', 'GatewayCodecs': u'PCMA', 'GatewayTimeouts': '1800'}
[2011-11-30 08:48:07,377: WARNING/PoolWorker-2] <urlopen error [Errno 111] Connection refused>
[2011-11-30 08:48:07,379: WARNING/PoolWorker-2] [2011-11-30 08:48:07,378: ERROR/PoolWorker-2] dialer_cdr.tasks.init_callrequest[272fc7a1-5462-4646-9e78-682ddaaf2aa7]: error : call_plivo
[2011-11-30 08:48:07,452: INFO/MainProcess] Task dialer_cdr.tasks.init_callrequest[272fc7a1-5462-4646-9e78-682ddaaf2aa7] succeeded in 0.121467828751s: False
[2011-11-30 08:48:10,243: DEBUG/Beat] Scheduler: Sending due task dialer_campaign.tasks.campaign_running
3] [2011-11-30 08:48:07,235: ERROR/PoolWorker-3] dialer_cdr.tasks.init_callrequest[c7c173ee-c75c-40f1-98b2-199639d6d488]: error : call_plivo
[2011-11-30 08:48:07,330: INFO/MainProcess] Task dialer_cdr.tasks.init_callrequest[c7c173ee-c75c-40f1-98b2-199639d6d488] succeeded in 0.226336956024s: False
[2011-11-30 08:48:07,333: INFO/MainProcess] Task dialer_cdr.tasks.init_callrequest[ba50b650-49ec-41e1-8304-e3ae855ceae3] succeeded in 0.225730895996s: False
[2011-11-30 08:48:07,337: DEBUG/MainProcess] Task accepted: dialer_cdr.tasks.init_callrequest[272fc7a1-5462-4646-9e78-682ddaaf2aa7] pid:2671
[2011-11-30 08:48:07,344: WARNING/PoolWorker-2] [2011-11-30 08:48:07,343: INFO/PoolWorker-2] dialer_cdr.tasks.init_callrequest[272fc7a1-5462-4646-9e78-682ddaaf2aa7]: TASK :: init_callrequest - status = 1
[2011-11-30 08:48:07,369: WARNING/PoolWorker-2] [2011-11-30 08:48:07,368: INFO/PoolWorker-2] dialer_cdr.tasks.init_callrequest[272fc7a1-5462-4646-9e78-682ddaaf2aa7]: dialout_phone_number : 9447004284
[2011-11-30 08:48:07,371: WARNING/PoolWorker-2] {'To': u'9447004284', 'GatewayRetries': '1', 'From': '8888888888', 'Gateways': u'sofia/gateway/myprovider', 'AnswerUrl': 'http://192.168.1.15:8008/api/v1/answercall/', 'ExtraDialString': 'bridge_early_media=true,hangup_after_bridge=true', 'HangupUrl': 'http://192.168.1.15:8008/api/v1/hangupcall/', 'GatewayCodecs': u'PCMA', 'GatewayTimeouts': '1800'}
[2011-11-30 08:48:07,377: WARNING/PoolWorker-2] <urlopen error [Errno 111] Connection refused>
[2011-11-30 08:48:07,379: WARNING/PoolWorker-2] [2011-11-30 08:48:07,378: ERROR/PoolWorker-2] dialer_cdr.tasks.init_callrequest[272fc7a1-5462-4646-9e78-682ddaaf2aa7]: error : call_plivo
[2011-11-30 08:48:07,452: INFO/MainProcess] Task dialer_cdr.tasks.init_callrequest[272fc7a1-5462-4646-9e78-682ddaaf2aa7] succeeded in 0.121467828751s: False
[2011-11-30 08:48:10,243: DEBUG/Beat] Scheduler: Sending due task dialer_campaign.tasks.campaign_running