TIA TIA-1145

Abstract

This document defines the functional characteristics and the requirements of the packet-switched Video Telephony (VT) services, sometimes also referred to as Multimedia Conversational Services (MCS). Video Telephony is defined as one-to-one video/speech communication capability. VT (MCS) should be used as a basis for multiparty multimedia conferencing, but this is out of scope for the initial document revision. <br>This initial effort is to be mindful of the continued development in subsequent phases of the following enhancements (without implying any relative priority): <br>&#8226; Interoperability support to other video telephony systems; <br>&#8226; Capability of multipoint communication. <br>Hence the following two phases in the development of video telephony are defined: <br><strong>Phase 1:</strong> Development of basic one-on-one video telephony functionality (Subject to Stage 1 Revision 0) <br><strong>Phase 2:</strong> Enhancement for support of other video telephony systems and multipoint communication (Subject to Stage 1 Revision A or later)