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HandWiki. R2 Signalling. Encyclopedia. Available online: https://encyclopedia.pub/entry/30835 (accessed on 20 October 2026).
HandWiki. R2 Signalling. Encyclopedia. Available at: https://encyclopedia.pub/entry/30835. Accessed October 20, 2026.
HandWiki. "R2 Signalling" Encyclopedia, https://encyclopedia.pub/entry/30835 (accessed October 20, 2026).
HandWiki. (2022, October 24). R2 Signalling. In Encyclopedia. https://encyclopedia.pub/entry/30835
HandWiki. "R2 Signalling." Encyclopedia. Web. 24 October, 2022.
R2 Signalling
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The content is sourced from: https://handwiki.org/wiki/Engineering:R2_signalling

R2 is a 1950s- and 1970s-era channel-associated-signalling signalling protocol used outside of the former Bell System, mostly Europe and Latin America, to convey information along a telephone trunk between two telephone switches in order to establish a single telephone call along that trunk. R2 is the name given to two broad protocol groups: R2 line signalling and R2 register signalling.

channel-associated-signalling signalling r2
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Update Date: 24 Oct 2022
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