ITE Technical Report
Online ISSN : 2424-1970
Print ISSN : 1342-6893
ISSN-L : 1342-6893
24.81
Session ID : BCS2000-174/BFO2000-
Conference information
Throughput Improvement of Voice and Telephony over ATM
S. KamolphiwongT. Kamolphiwong
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Keywords: VTOA, Telephony, ATM, AAL2
CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract

In this paper, we investigate the performance of ATM services to carry low bit rate voice traffic. We show some limitations of AAL-1(ATM Adaptation Layer 1)when it is used for carrying low bit rate voice, for example, low number of voice channels, under-utilise network resources. In contrast, when assessing the use of AAL-2 for carrying low bit rate voice, AAL2 offers a number of advantages when compared with AAL-1. However, the original AAL2 introduces a large overhead leading to low system throughput even a system is operated efficiently. We have proposed a new AAL2 scheme which has a lower overhead. We have shown that our proposed AAL-2 scheme can improve throughput performance of ATM networks when carry low bit rate voice traffic. Our proposed scheme offers a lower overhead as well as a higher number of voice channels.

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© 2000 The Institute of Image Information and Television Engineers
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