Efficiency of packet voice with deterministic delay

Author

Baldi, Mario ; Risso, Fulvia

Author_Institution

Politecnico di Torino, Italy

Volume

38

Issue

5

fYear

2000

fDate

5/1/2000 12:00:00 AM

Firstpage

170

Lastpage

177

Abstract

Packet switching is appealing for carrying real-time traffic because it can benefit from (possibly variable bit rate) compression schemes and statistical multiplexing to more efficiently exploit network resources. This work explores the efficiency of IP telephony in terms of the volume of voice traffic carried with deterministically guaranteed quality related to the amount of network resources used. An IP network carrying compressed voice is compared to circuit switching carrying PCM (64 kb/s) encoded voice, and some design choices affecting IP telephony efficiency are discussed

Keywords

Internet telephony; circuit switching; data compression; delays; packet switching; pulse code modulation; speech codecs; speech coding; telecommunication congestion control; telecommunication traffic; transport protocols; voice communication; 64 kbit/s; IP network; IP telephony; PCM encoded voice; call admission control; circuit switching; codecs; compressed voice; deterministic delay; deterministically guaranteed quality; network resources; packet switching; packet voice efficiency; real-time traffic; statistical multiplexing; variable bit rate compression; voice traffic; Communication system traffic control; Delay; Diffserv networks; Packet switching; Phase change materials; Protocols; Resource management; Switching circuits; Telecommunication traffic; Telephony;

fLanguage

English

Journal_Title

Communications Magazine, IEEE

Publisher

ieee

ISSN

0163-6804

Type

jour

DOI

10.1109/35.841843

Filename

841843