IEICE TRANSACTIONS on Communications
Call Admission Controls in an IP-PBX Considering the End-to-End QoS of VoIP Calls with Silence Suppression
Summary :
A statistical call admission control (CAC) allows more calls with on-off patterns to be accepted and a higher channel efficiency to be achieved. In this paper, we propose three statistical CACs for VoIP calls with silence suppression considering the priority of each VoIP call, where the call priority is determined by the call acceptance order in an IP-PBX. We analyse the packet loss rates in an IP-PBX under the proposed strategies and express the end-to-end QoS of a VoIP call as an R-factor in a VoIP service network. The performances of the proposed CACs are evaluated using the maximum allowable number of VoIP calls while satisfying the end-to-end QoS constraint, the average QoS of acceptable VoIP calls and the channel efficiency. The advantage of the proposed statistical CACs over the non-statistical CAC is verified in terms of these three performance metrics. The results indicate that a trade-off is possible in that the maximum allowable number of VoIP calls in an IP-PBX increases as the average QoS of acceptable VoIP calls is lowered according to the proposed statistical CAC used. Nevertheless, the results allow us to verify that the channel efficiencies are the same for all the statistical CACs considered.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E100-B No.2 pp.280-292
- Publication Date
- 2017/02/01
- Publicized
- 2016/08/09
- Online ISSN
- 1745-1345
- DOI
- 10.1587/transcom.2016EBP3235
- Type of Manuscript
- PAPER
- Category
- Network System
Authors
Ji-Young JUNG
Chung-Ang University
Jung-Ryun LEE
Chung-Ang University
Keyword
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Ji-Young JUNG, Jung-Ryun LEE, "Call Admission Controls in an IP-PBX Considering the End-to-End QoS of VoIP Calls with Silence Suppression" in IEICE TRANSACTIONS on Communications,
vol. E100-B, no. 2, pp. 280-292, February 2017, doi: 10.1587/transcom.2016EBP3235.
Abstract: A statistical call admission control (CAC) allows more calls with on-off patterns to be accepted and a higher channel efficiency to be achieved. In this paper, we propose three statistical CACs for VoIP calls with silence suppression considering the priority of each VoIP call, where the call priority is determined by the call acceptance order in an IP-PBX. We analyse the packet loss rates in an IP-PBX under the proposed strategies and express the end-to-end QoS of a VoIP call as an R-factor in a VoIP service network. The performances of the proposed CACs are evaluated using the maximum allowable number of VoIP calls while satisfying the end-to-end QoS constraint, the average QoS of acceptable VoIP calls and the channel efficiency. The advantage of the proposed statistical CACs over the non-statistical CAC is verified in terms of these three performance metrics. The results indicate that a trade-off is possible in that the maximum allowable number of VoIP calls in an IP-PBX increases as the average QoS of acceptable VoIP calls is lowered according to the proposed statistical CAC used. Nevertheless, the results allow us to verify that the channel efficiencies are the same for all the statistical CACs considered.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2016EBP3235/_p
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@ARTICLE{e100-b_2_280,
author={Ji-Young JUNG, Jung-Ryun LEE, },
journal={IEICE TRANSACTIONS on Communications},
title={Call Admission Controls in an IP-PBX Considering the End-to-End QoS of VoIP Calls with Silence Suppression},
year={2017},
volume={E100-B},
number={2},
pages={280-292},
abstract={A statistical call admission control (CAC) allows more calls with on-off patterns to be accepted and a higher channel efficiency to be achieved. In this paper, we propose three statistical CACs for VoIP calls with silence suppression considering the priority of each VoIP call, where the call priority is determined by the call acceptance order in an IP-PBX. We analyse the packet loss rates in an IP-PBX under the proposed strategies and express the end-to-end QoS of a VoIP call as an R-factor in a VoIP service network. The performances of the proposed CACs are evaluated using the maximum allowable number of VoIP calls while satisfying the end-to-end QoS constraint, the average QoS of acceptable VoIP calls and the channel efficiency. The advantage of the proposed statistical CACs over the non-statistical CAC is verified in terms of these three performance metrics. The results indicate that a trade-off is possible in that the maximum allowable number of VoIP calls in an IP-PBX increases as the average QoS of acceptable VoIP calls is lowered according to the proposed statistical CAC used. Nevertheless, the results allow us to verify that the channel efficiencies are the same for all the statistical CACs considered.},
keywords={},
doi={10.1587/transcom.2016EBP3235},
ISSN={1745-1345},
month={February},}
Copy
TY - JOUR
TI - Call Admission Controls in an IP-PBX Considering the End-to-End QoS of VoIP Calls with Silence Suppression
T2 - IEICE TRANSACTIONS on Communications
SP - 280
EP - 292
AU - Ji-Young JUNG
AU - Jung-Ryun LEE
PY - 2017
DO - 10.1587/transcom.2016EBP3235
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E100-B
IS - 2
JA - IEICE TRANSACTIONS on Communications
Y1 - February 2017
AB - A statistical call admission control (CAC) allows more calls with on-off patterns to be accepted and a higher channel efficiency to be achieved. In this paper, we propose three statistical CACs for VoIP calls with silence suppression considering the priority of each VoIP call, where the call priority is determined by the call acceptance order in an IP-PBX. We analyse the packet loss rates in an IP-PBX under the proposed strategies and express the end-to-end QoS of a VoIP call as an R-factor in a VoIP service network. The performances of the proposed CACs are evaluated using the maximum allowable number of VoIP calls while satisfying the end-to-end QoS constraint, the average QoS of acceptable VoIP calls and the channel efficiency. The advantage of the proposed statistical CACs over the non-statistical CAC is verified in terms of these three performance metrics. The results indicate that a trade-off is possible in that the maximum allowable number of VoIP calls in an IP-PBX increases as the average QoS of acceptable VoIP calls is lowered according to the proposed statistical CAC used. Nevertheless, the results allow us to verify that the channel efficiencies are the same for all the statistical CACs considered.
ER -
English
