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ISDN Protocol Administrator's and Developer's Guide ... - Intervoice

ISDN Protocol Administrator's and Developer's Guide ... - Intervoice

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British TelecomBritish Telecom specifications BTNR 188 <strong>and</strong> 189 are mentioned in thisdocument. Listed below are the documents that contain thespecifications:BTNR 188 – Digital Private Signalling System No 1 (DPNSS 1)Discusses physical characteristics of various interfaces for theprotocol, Data Link Layer 2, message types <strong>and</strong> formats, Level 3signaling procedures, <strong>and</strong> important protocol functions.BTNR 189 – Internetworking Between DPNSS1 <strong>and</strong> Other SignallingSystemsDetails the requirements that are necessary for DPNSS 1 to workwith PSTN, DASS 2, Decadic Private Circuit, <strong>and</strong> SSMF5.These documents are now available from:BTNR Technical Secretariat,020 8301 7422 (telephone)020 8303 6580 (fax)ORNetwork Interoperability Consultative CommitteeOftel50 Ludgate HillLondonEC4M 7JJUK60001262, First Edition About This Document xxvii

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