Common_Network_Interface_(CNI)_Ring

Common-network interface ring

Common-network interface ring

Telephony signaling device

The common-network interface ring (CNI ring) provides common-channel signaling (CCS) functionality on several Alcatel-Lucent SS7 products. It was introduced by Western Electric in the early 1980s but is still used today in all 1AESS and 4ESS,[1] offices, and most of the wireline 5ESS offices.[2]

It was designed and manufactured at the combined Bell Labs–WECo location in Columbus, Ohio.

References

  1. [1]
    US Patent 5592466 – Network interconnect backup Archived 2011-06-12 at the Wayback Machine
  2. [2]
    Brown, R.B.; Holmes, C.V.; Lanoux, M.D.; Marciani, T.P. (1992). "Common channel signaling in the AT&T US 5ESS switch". Proceedings of the IEEE. 80 (4): 618–627. doi:10.1109/5.135384.
Share this article:

This article uses material from the Wikipedia article Common_Network_Interface_(CNI)_Ring, and is written by contributors. Text is available under a CC BY-SA 4.0 International License; additional terms may apply. Images, videos and audio are available under their respective licenses.