A multiplexing scheme for H.323 voice-over-IP applications

Authors:
H. P. Sze;S. C. Liew;J. Y.B. Lee;D. C.S. Yip
Affiliations:
Dept. of Inf. Eng., Chinese Univ. of Hong Kong, Shatin;-;-;-
Venue:
IEEE Journal on Selected Areas in Communications
Year:
2006

Citing 0
Cited 6

WLAN VoIP capacity allocation using an adaptive voice packetization server

Computer Communications
Source models for speech traffic revisited

IEEE/ACM Transactions on Networking (TON)
Sparse telephone gateway for internet telephony

Computer Networks: The International Journal of Computer and Telecommunications Networking
CAC for VoIP traffic over wireless systems with voice activity detection and background noise transmission

NTMS'09 Proceedings of the 3rd international conference on New technologies, mobility and security
Evaluating the influence of multiplexing schemes and buffer implementation on perceived VoIP conversation quality

Computer Networks: The International Journal of Computer and Telecommunications Networking
Review: A comprehensive survey on scheduler for VoIP over WLAN

Journal of Network and Computer Applications

Quantified Score

Hi-index	0.07

Visualization

Abstract

Voice communications such as telephony are delay sensitive. Existing voice-over-IP (VoIP) applications transmit voice data in packets of very small size to minimize packetization delay, causing very inefficient use of network bandwidth. This paper proposes a multiplexing scheme for improving the bandwidth efficiency of existing VoIP applications. By installing a multiplexer in an H.323 proxy, voice packets from multiple sources are combined into one IP packet for transmission. A demultiplexer at the receiver-end proxy restores the original voice packets before delivering them to the end-user applications. Results show that the multiplexing scheme can increase bandwidth efficiency by as much as 300%. The multiplexing scheme is fully compatible with existing H.323-compliant VoIP applications and can be readily deployed.