OpenERP - Asterisk connector

I had installed the Asterisk server in my local and installed all asterisk modules from launchpad. When I press the 'Test connection to Asterisk' button in asterisk server record under Telephony menu under settings shows '

Connection Test Successfull!

OpenERP can successfully login to the Asterisk Manager Interface.'

Then I move to customer record and Dial a phone, It shows the warning

"Error:

Click to dial with Asterisk failed.
Here is the error: 'py-Asterisk action failed: Originate failed"

Is anybody know the exact configuration of asterisk openerp connector