Voice and Internet Multimedia in UMTS Networks
M. C. Bale · Institution of Engineering and Technology eBooks · 2001
This chapter initially provides an overview of how a voice telephony service is supported by a UMTS network conforming to the 3GPP Release 1999 standards. It then describes how the subsequent 3GPP Release 4 standards allow for the Internet protocol to be used as a bearer service for voice. The chapter then goes on to describe the proposed solution currently being standardised by 3 GPP for Internet multimedia services (including voice), known as the Release 5 standards. This solution is illustrated with message sequence flows to show the dynamic aspects of the solution and the application of the various protocols. It is assumed that the reader already has an awareness of GSM and general packet radio service (GPRS) networks.