[Freeswitch-users] Outbound calls to external domain

Hi all, Is it a mandatory requirement that for all outbound calls to an external domain (domains that freeswitch is not responsible for), an entry in the dial plan is required. To be more precise, is it a pre condition that the name of the external domain need to be know before making a call. If YES, then I feel it is a bad design, because each time a user wants to call a user from different external domain a new entry in dial plan is required. If the answer is NO, please tell me what is the configuration required apart from DNS records, to be there at the freeswitch. Thanks and Regards, -Sandeep A