Editing IBM RT PC (section)

==As part of the NSFNET backbone==
<blockquote>In 1987, "The NSF starts to implement its T1 backbone between the supercomputing centers with 24 RT-PCs in parallel implemented by IBM as ‘parallel routers’. The T1 idea is so successful that proposals for T3 speeds in the backbone begin. [https://www.computerhistory.org/internethistory/1980s Internet History of 1980s]</blockquote>
The [[National Science Foundation Network]] (NSFNET) was the forerunner of the [[Internet]]. From July 1988 to November 1992, the NSFNET's T1 [[Internet backbone|backbone network]] used [[Router (computing)|router]]s built from multiple RT PCs (typically nine) interconnect by a Token Ring LAN.<ref>{{cite journal |last1=Claffy |first1=Kimberly C. |last2=Braun |first2=Hans-Werner |last3=Polyzos |first3=George C. |title=Tracking long-term growth of the NSFNET |journal=Communications of the ACM |date=August 1994 |volume=37 |issue=8 |pages=34–45 |doi=10.1145/179606.179616 |s2cid=3013869 |doi-access=free }}</ref>