It's a Bellcore standard. You'll probably have luck if you start searching for that, from the days when Bell was the telephone company.
Here's the European (ETSI) ringing standards, which I found when searching for the Bell standards: https://www.etsi.org/deliver/etsi_es/201000_201099/201071/01.01.02_50/es_201071v010102m.pdf It should give you a reference for searching. tim On Tue, Mar 12, 2019 at 3:46 PM Christopher Gray <cg...@graytechsoftware.com> wrote: > I’m working with Cambium support, and they asked me to provide them with > the RFC that defines the North American ring cadence. > > > > I can’t seem to find an RFC that defines it (presumably since it was > defined long before RFC existed). > > > > Any suggestions for where to find North American ring cadence defined? I > know what it is, but Cambium wants a reference. > > > > Thank you, Chris > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- Tim Cailloux Southern Internet -- Locally Owned and Operated t...@southern-internet.com (404) 406-9911
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