A means for an enhanced-service provider customer to connect to a network and to the enhanced service provider. Note: Complementary network services usually consist of the customer local service, such as a business or residence, and several associated service features, such as a call -forwarding service.
COMPLEMENTARY NETWORK SERVICE (CNS)
Meaning of COMPLEMENTARY NETWORK SERVICE (CNS) in English
Telecommunication standard terms English vocab. Английский словарь стандартных телекоммуникационных терминов. 2012