NDLI: Quality codec interface for VoIP on differentiated services networks

Content Provider	IEEE Xplore Digital Library
Author	Zmily, A. Abu-Saymeh, D.
Copyright Year	2013
Description	Author affiliation: Dept. of Commun. Eng., German-Jordanian Univ., Jordan (Zmily, A.; Abu-Saymeh, D.)
Abstract	As converged services are becoming the standard for corporate networks, concerns have been arising on the best way to ensure efficient use of expensive WAN bandwidth. Achieving excellent quality of multimedia and voice communication requires the allocation of large bandwidth for these services. In most cases, lossy compression codecs are used to reduce bandwidth requirements resulting in lower quality of service. The codec selection is maintained even during low bandwidth utilization. In this paper, we present a codec interface that combines high-fidelity high-bitrate and low-fidelity low-bitrate codecs. Audio packets from the low-bitrate codec are transmitted on the highest priority class of service of differentiated services networks. This ensures that these packets always arrive at destination. Audio packets from the high-bitrate codec are transmitted on the lowest priority class of service. At low bandwidth utilization, the high-fidelity high-bitrate packets will be used and during congestions, these packets would be dropped. This ensures achieving the best possible voice quality during varying network loads. Simulation results measuring the mean opinion score of voice quality show that superior voice quality can be achieved with this method over using standalone codecs while maintaining excellent quality of service for data traffic as well.
Starting Page	1
Ending Page	5
File Size	404938
Page Count	5
File Format	PDF
ISBN	9781479906949
DOI	10.1109/SaCoNeT.2013.6654563
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-17
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wide area networks Codecs Speech coding Bit rate Bandwidth Quality of service Speech
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Subjective quality evaluation of the 3GPP EVS codec

Determination of bit-rate adaptation thresholds for the Opus codec for VoIP services

Adaptive QoS control approaches for VoIP over multi-rate WLANs

Comparisons of FEC and codec robustness on VoIP quality and bandwidth efficiency (2002)

Performances analysis of VoIP over 802.11b and 802.11e using different CODECs

Study on the application of an AMR speech codec to VoIP

A Research on Adaptive QoS Technology

Non intrusive codec identification algorithm

VoIP Quality Enhancement with Wideband Extension Method in Broadband Networks

Quality codec interface for VoIP on differentiated services networks

Similar Documents

Subjective quality evaluation of the 3GPP EVS codec

Determination of bit-rate adaptation thresholds for the Opus codec for VoIP services

Adaptive QoS control approaches for VoIP over multi-rate WLANs

Comparisons of FEC and codec robustness on VoIP quality and bandwidth efficiency (2002)

Performances analysis of VoIP over 802.11b and 802.11e using different CODECs

Study on the application of an AMR speech codec to VoIP

A Research on Adaptive QoS Technology

Non intrusive codec identification algorithm

VoIP Quality Enhancement with Wideband Extension Method in Broadband Networks

Quality codec interface for VoIP on differentiated services networks