A typical aim here is to gain a better understanding of cross-cultural communication through a comparative study of diaphonic repetition in Chinese and American students telephone conversations.

The research in this paper is a study of the private telephone conversations of a Chinesewith the variation theory as the theoretical guide and Hymes’ ethnography of speaking theoryas the framework for analysis.

Design and realization of conference telephone system based on LAN;

The paper introduces the main functions of RDC-1 Railway Digital Conference Telephone equipment and it s field testing.

Analysis and Amend Wireless Anonymous Conference Call Authentication Protocols;

The conference call is summarized and classified at first,then a full duplex conference by booking is discussed.

It also provides usage description of EPD tool,and introduces in detail the coding/decoding,algorithm,characteristics,and implementation method of conference call.

Research and realization of telephone conference system based on packet forwarding;

Research on telephone conference in communication networks;

Under the popularization tendency of the application of telephone conference system and in order to solve the problems existed in present telephone conference, a new implementation method of telephone conference named telephone conference technology based on packet forwarding is proposed and designed in the paper.