- Data Network Interface Circuit (DNIC)
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интерфейсная схема цифровой сети передачи данных
English-Russian dictionary of modern telecommunications. 2003.
English-Russian dictionary of modern telecommunications. 2003.
Packet switched network — A Packet Switched Network, or PSN, refers to the packet switched networks that existed before the Internet. The history of such networks can be divided into three eras:early networks before the introduction of X.25 and OSI,the X.25 era when many… … Wikipedia
X.25 — is an ITU T standard network layer protocol for packet switched wide area network (WAN) communication. An X.25 WAN consists of packet switching exchange (PSE) nodes as the networking hardware, and leased lines, Plain old telephone service… … Wikipedia