In Integrated Services Digital Networks ( ISDN ), an intelligent device that may include functionality for OSI Layers 1 through 3 (dependent on individual systems requirements).
NETWORK TERMINATION 2 (NT2)
Meaning of NETWORK TERMINATION 2 (NT2) in English
Telecommunication standard terms English vocab. Английский словарь стандартных телекоммуникационных терминов. 2012