A method for enabling originating and destination telephones to conduct a call session through an intermediary telephone includes the following steps: (A) enabling the originating telephone to send a query request to the intermediary telephone so as to search the intermediary telephone for contact information of the destination telephone; and (B) if the contact information of the destination telephone is available in the intermediary telephone, enabling the originating telephone to conduct the call session with the destination telephone using the contact information in the intermediary telephone. Applications of the method are also disclosed.