The Joint Chiefs of Staff Alerting Network -
Command Post Alerting Network

JCSAN/COPAN was built and operated by AT&T to provide fast, reliable emergency voice communications between the Joint Chiefs of Staff at the Pentagon's National Military Command Center, and Commander-in-Chief locations worldwide. The network's original control office was at AT&T's Garden City, VA microwave station; this function was transfered to the AT&T office at the Pentagon (called Pentagon No. 3).

An article in the Bell Laboratories Record describes the system.

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Created on October 12, 2003 at 19:37 by Albert LaFrance