A method and system are disclosed to proxy mobile and network originated call sessions. A system that incorporates teachings of the present disclosure may include, for example, a method to access a phone directory using a mobile device including transmitting on a data channel of a wireless communications network a request for access to the phone directory, transmitting on the data channel one or more selective requests to search the phone directory, receiving on the data channel one or more successive portions of the phone directory according to the one or more selective requests, and transmitting on the data channel an abbreviated identifier associated with an entry of the phone directory for establishing voice communications with a terminal device. Other embodiments are disclosed.