URN	etd-0509105-165155
Author	Jimmy Cha
Author's Email Address	No Public.
Statistics	This thesis had been viewed 449 times. Download 328 times.
Department	Electronic and Information Engineering
Year	2001
Semester	2
Degree	Master
Type of Document	Master's Thesis
Language	zh-TW.Big5 Chinese
Title	Simulation and Software Implementation of ATM/AAL2 Protocol for Digital Voice Communication
Date of Defense	2001-06-09
Page Count	43
Keyword	multiplexing ATM/AAL2 Voice Communication
Abstract	Asynchronous Transfer Mode/Adaptation Layer 2 (ATM/AAL2) protocol has been greatly modified by the International Telecommunication Union-Telecommunication (ITU-T) for supporting low bit rate and delay sensitive applications. The idea of AAL2 protocol is to multiplex voice packets from different users into one ATM cell to reduce the packetization delay. Therefore, the time to fill a cell can be reduced significantly. In the other hand, the ADSL (Asymmetric Digital Subscriber Line) technologies are a new platform for bringing the broadband services to the homes and to the small businesses. In this thesis, we evaluate the performance of ATM/AAL2 for voice transport in ADSL network using simulation approach. The goal is to understand the relationship between the parameters, such as Timer-CU, voice compression rate, and CPS-SDU fill delay, and the network utilization. From the simulation results we derive the design guideline which can provide the digital voice service provider as a reference for the key parameters setting. In addition, we also implement the software based AAL2/ATM/Ethernet platform on the personal computer. Based on the software AAL2 platform, we integrate the PCI voice card to realize the voice over AAL2/ATM/Ethernet test bed which can be used to verify the voice over AAL2 behaviors.
Advisory Committee	Ching-Lung Chang - advisor
Files	etd-0509105-165155.pdf indicate access worldwide
Date of Submission	2005-05-09