Common Network Interface Ring

Common Network Interface Ring

The Common Network Interface (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[2] offices. It was designed and manufactured at the combined Bell Labs WECo location in Columbus Ohio.

References

  1. ^ US Patent 5592466 - Network interconnect backup
  2. ^ Common channel signaling in the AT&T US 5ESS switch Brown, R.B., Jr.; Holmes, C.V.; Lanoux, M.D.; Marciani, T.P. Proceedings of the IEEE Volume 80, Issue 4, Apr 1992 Page(s):618 - 627

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