Meanwhile,an early-session based extension means is proposed,which can support multiple early media services simultaneously in the same IMS call instance.

In the paper,after analyzing the SIP call flow with early media,three color ring back tone means under SIP control: the user agent approach,the color ring back tone server approach and the media server approach are put forward and analyzed in details.

The signal process of early media and an early media scenario of session establishment have been researched.

This paper probes the Protestant positive influence on early American politics.

An Intertextual Analysis of the News Reports on the Taiwan Issues by the American Media;

Analysis on the Interaction between American Media and Congress during the Foreign Policy-Making of the United States;

However, American media, with their strong economy, advanced technology, rich experience in communications and the advantage of its language, play a significant role in the construction of the images of other countries.

Constructivism Analysis upon US Media's Negative Cover Towards China after the Cold War;

It is mainly focused on the research in the roots of US media s negative report on the political development in Hong Kong from 2003 to 2005.

Through a Darkly Glass embodies the latest development in the field of early American history in the United States.