Common-network interface ring
──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
top
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,cite-ref-1[1] offices, and most of the wireline 5ESS offices.cite-ref-2[2]
References
cite-note-11. ↑ US Patent 5592466 – Network interconnect backup Archived 2011-06-12 at the Wayback Machine