Scheduled System Maintenance:
On May 6th, single article purchases and IEEE account management will be unavailable from 8:00 AM - 5:00 PM ET (12:00 - 21:00 UTC). We apologize for the inconvenience.
By Topic

Telephone service survivability

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Mendiratta, V.B. ; Lucent Technol. Bell Labs., Naperville, IL, USA ; Witschorik, C.A.

The public switched telephone network (PSTN) was designed for high reliability and availability and has achieved an impressive record of service over its history. People today expect continuous telephone service, even in emergencies such as the loss of commercial power or construction cable cuts. The PSTN, however, was not designed for survivability in the face of malicious or catastrophic faults that cause total failure of one of its subscriber-line switching offices. Such a failure could potentially disrupt phone service to thousands of customers for days or weeks, depending on the extent of the damage. Fortunately, modern switching equipment is designed for distribution over a wide geographic area and several subscriber-line architectures are available to address survivability issues. This paper defines the issue of subscriber-line survivability and identifies architectures that improve survivability.

Published in:

Design of Reliable Communication Networks, 2003. (DRCN 2003). Proceedings. Fourth International Workshop on

Date of Conference:

19-22 Oct. 2003