Voice over IP (VoIP) and Web proxy over xDSL (I)
Date Issued
2001-07-31
Date
2001-07-31
Author(s)
DOI
892218E002081
Abstract
As a sub-project of the joint project
entitled “xDSL Multimedia Multi-service
Communications System,” this project,
named “Voice over IP (VoIP) and Web
Proxy over xDSL,” attempts to design both
VoIP and Web proxy services over xDSL
developed by the other sub-projects in a
three-year span. The asymmetric
transmission feature of xDSL creates many
new problems for existing Internet protocols
and causes many challenges for multimedia
services to be widely deployed
In the first year, we have set up a testbed
using a commercial xDSL for our system
in the Internet Research Lab. of the Electrical
Engineering Department at National Taiwan
University. After investigating the
asymmetric characteristic of transmission in
xDSL, we proposed a TCP variation named
‘Formosa TCP’ as a transport layer protocol
to achieve better performance in the
environment of asymmetric broadband
access network like xDSL. We also
conducted simulations using ns2 to evaluate
the performance of our protocol with other
protocols.
The preliminary results of this project
have been published on the proc. IEEE ICC
2001.
Subjects
ADSL
Internet Telephony
Proxy service
Proxy service
Publisher
臺北市：國立臺灣大學電機工程學系暨研究所
Type
report
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