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Article: NANP changes affect call accounting. (North American Numbering Plan)
- Article from:
- Communications News
- Article date:
- January 1, 1995
CopyrightCOPYRIGHT 1995 Nelson Publishing. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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The North American Numbering Plan (NANP) went into effect Jan. 1. The changes mean quite a lot to call accounting users. The creation of the NANP in 1947 established 152 geographic and non-geographic area codes for telephone numbers. Complete exhaustion of these original area codes is rapidly taking place. Bell Communications Research (Bellcore), the NANP administrator, has designed a new numbering plan to address this current exhaustion threat.
The changes will force modification to all call accounting systems.
Interchangeable area codes are the basis for the new numbering plan. Since the introduction of Direct Distance Dialing (DDD) in November 1951, ...