Terminal equipment of communication system and method thereof

A transmitting and receiving apparatus, comprising:

• a voice processing block for encoding voice into a voice frame to transfer the encoded voice frame or decoding a received voice frame to output the decoded voice frame;
• a user data block for processing user data;
• a user data interfacing block for allocating a service identifier to the user data transferred thereto from the user data block, demultiplexing the user data into user data segments of given sizes to transfer the user data segment to a PDS (Peer-to-Peer Data Service) processing block, assembling the user data segment transferred from the PDS processing block, interpreting the service identifier, and transferring the user data to the user data block;
• the PDS processing block for generating a PDS frame based on the voice frame transferred from the voice processing block, or on the voice frame and a data frame corresponding to the user data frame segment transferred from the user data interfacing block to transfer the PDS frame to an access physical layer block, and analyzing the PDS frame transferred from the access physical layer block to transfer the voice frame to the voice processing block or the user data segments to the user data block;
• and
• the access physical layer block for transmitting and receiving the PDS frame through a voice physical channel according to an access standard of a communication environment.