Revision as of 08:52, 9 August 2019 edit Willbb234 (talk \| contribs) Extended confirmed users 15,919 edits Adding short description: "Proprietary protocol providing ISDN services" (Shortdesc helper) ← Previous edit		Revision as of 10:10, 9 June 2020 edit undo 94.119.64.6 (talk) Category Next edit →
Line 7: [[Category:BT Group]] [[Category:History of telecommunications in the United Kingdom]] [[Category:Integrated Services Digital Network]] {{UK-stub}}

Digital Access Signalling System 1: Difference between revisions