asterisk users - Mar 2010 - Inbound configuration

Hi All,

I am trying to configure asterisk only for inbound calls and using
freepbx to configure it

I have created a inbound route and tried to call the number, i am
getting the following error message.

Extension '<inbound DID number>' in context 'default' from
'<caller
ID>' does not exist.  Rejecting call on channel 0/1, span 2

Can any one help me figure out this issue.

Regards
Chima