Common Management Information Protocol

Centralized Management Protocol

Abbreviation for common-mode rejection ratio.

Commercial Mobile Radio Service

Core Network

Abbreviation for carrier-to-noise ratio, combat-net radio.

Abbreviation forcomplementary network service.

Central Office

A point in time at which the quantity of TNs within existing CO codes (NXX) which are “Available for Assignment” equals zero within a switching entity/Point Of Interconnection (POI) or, conversely, when the quantities of “TNs Unavailable for Assignment” equal 10,000 times the quantity of existing CO codes (NXX) assigned to a switching entity/POI. Where CO code sharing occurs or… (Read More →)

Entity(ies) responsible for the administration of the NXXs within an NPA.