Breadcrumb

 
 

Handling feature interactions in the SIP servlet context

Title:

Handling feature interactions in the SIP servlet context

Yang, Lu (2005) Handling feature interactions in the SIP servlet context. Masters thesis, Concordia University.

[img]
Preview
PDF - Accepted Version
4Mb

Abstract

Session Initiation Protocol (SIP) and Servlet technology introduce new ways of delivering telephony services over IP networks. The richness and flexibility of these new protocols make it faster and easier for service providers to develop and deploy new services. This flexibility, however, is offset by the challenge of managing the feature interaction problem, which can prove to be quite severe. This thesis proposes a modified SIP Servlet architecture and introduces a logical entity, the Feature Interaction Handler (FIH), to address the feature interaction problem for telephony services. The approach addresses offline and online feature interaction detection, the former occurring when the user registers to a feature and the latter occurring during feature runtime execution. For offline feature interaction detection, a behaviour mapping approach is introduced to reduce the interaction matrix table. For online feature interaction detection, two mechanisms are proposed---'forward detection' and 'backward detection'. Forward detection extends the originating side user profile when sending the message, such that the terminating side can use it for detection. In contrast, backward detection correlates the SIP session 'request' message with the 'response' message belonging to the same session in order to determine if the resulting service behaviour is acceptable. To validate the new feature interaction detection approach, an offline feature interaction detection tool and online feature interaction detection unit FIH have been implemented. The feature interaction benchmark is applied on both the tool and the FIH, the result proves to be successful. The feature interaction detection approach proposed in this thesis proves to be a viable solution in the context of SIP servlet service environment.

Divisions:Concordia University > Faculty of Engineering and Computer Science > Electrical and Computer Engineering
Item Type:Thesis (Masters)
Authors:Yang, Lu
Pagination:xii, 126 leaves : ill. ; 29 cm.
Institution:Concordia University
Degree Name:M.A. Sc.
Program:Electrical and Computer Engineering
Date:2005
Thesis Supervisor(s):Khendek, Ferhat
ID Code:8560
Deposited By:Concordia University Libraries
Deposited On:18 Aug 2011 14:28
Last Modified:18 Aug 2011 15:23
Related URLs:
All items in Spectrum are protected by copyright, with all rights reserved. The use of items is governed by Spectrum's terms of access.

Repository Staff Only: item control page

Document Downloads

More statistics for this item...

Concordia University - Footer