Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Policies and Conflicts in Call Control
AU - Turner, Kenneth J.
AU - Blair, Lynne
N1 - The final, definitive version of this article has been published in the Journal, Computer Networks 51 (2), 2007, © ELSEVIER.
PY - 2007/2
Y1 - 2007/2
N2 - Policy-based management is introduced and related to the specific needs of call control. It is explained how policies differ in important ways from features. Related work on policy-based management is reviewed, leading to the conclusion that a different approach is required for call control. A general architecture is presented for a policy system. This includes an overview of the major policy components, relating them to the system under control and to the context system that provides additional information. As a framework for explaining how policy conflicts are handled, the policy language for call control is briefly presented along with some sample policies. The paper then focuses on how policy conflicts are defined and resolved, using sample resolutions to illustrate the approach. Pointers are given to future enhancements to policy support, including new applications of policies to novel domains.
AB - Policy-based management is introduced and related to the specific needs of call control. It is explained how policies differ in important ways from features. Related work on policy-based management is reviewed, leading to the conclusion that a different approach is required for call control. A general architecture is presented for a policy system. This includes an overview of the major policy components, relating them to the system under control and to the context system that provides additional information. As a framework for explaining how policy conflicts are handled, the policy language for call control is briefly presented along with some sample policies. The paper then focuses on how policy conflicts are defined and resolved, using sample resolutions to illustrate the approach. Pointers are given to future enhancements to policy support, including new applications of policies to novel domains.
KW - Call control
KW - Internet telephony
KW - Policy
KW - Policy conflict
U2 - 10.1016/j.comnet.2006.08.007
DO - 10.1016/j.comnet.2006.08.007
M3 - Journal article
VL - 51
SP - 496
EP - 514
JO - Computer Networks
JF - Computer Networks
SN - 1389-1286
IS - 2
ER -