1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUNDERWRITERS LABORATORIES INC. CERTIFICATION REQUIREMENT DECISIONThis Certification Requirement Decision is prepared and published by Underwriters Laboratories Inc.(UL). It is normative for the a
2、pplicable UL Product Certification Program(s); however, it is currently notpart of the UL Standard(s) referenced below.Product Category (CCN): CPVX, CVSU, MVDO, UUFX, UUFOStandard Number: UL 827Standard Title: Standard for Central-Station Alarm ServicesEdition Date: October 29, 2014Edition Number: 8
3、Section / Paragraph Reference: 12.1.6, 12.1.7Subject: Alternative equivalency for geographically diverse signal pathsDECISION:The alternative paragraphs 12.1.6 and 12.1.7 provide equivalency options for the existingpublished 12.1.6 and 12.1.7 and allow for equivalent technology solutions.(Existing)
4、12.1.6 If the central station receives signals from monitored alarm systems that are transmittedwith either a packet switched data network or a managed facilities based voice network the station shallutilize two independent internet service providers (ISP) or two independent managed facilities based
5、 voicenetwork (MFVN) providers if available.(Alternative) 12.1.6 If the central station receives signals from monitored alarm systems that aretransmitted with either a packet switched data network or a managed facilities based voice network thestation shall utilize two independent internet service p
6、roviders (ISP) or two independent managed facilitiesbased voice network (MFVN) providers if available communication services that deliver geographicallydiverse signal pathways, if possible by:a) Utilizing two independent internet service providers (ISP) or two independent managedfacilities based voi
7、ce network (MFVN) providers or;b) Utilizing one internet service provider (ISP) or one managed facilities based voice network(MFVN) provider that provides contracted diverse signal pathways arranged so that thepathways are not likely to be affected by the same natural or man-made disasters or single
8、point of failure.-(Existing) 12.1.7 If the central station utilizes managed facilities based voice network (MFVN) for voicetelephone communication, the station shall utilize two independent MFVN providers if available.(Alternate) 12.1.7 If the central station utilizes managed facilities based voice
9、network (MFVN) for voicetelephone communication the station shall utilize two independent MFVN providers if availablecommunication services that deliver geographically diverse signal pathways, if possible, by:a) Utilizing two independent managed facilities based voice network (MFVN) providers or;b)
10、Utilizing one managed facilities based voice network (MFVN) provider that providescontracted diverse signal pathways arranged so that the pathways are not likely to be affectedby the same natural or man-made disasters or single point of failure.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPR
11、ODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULRATIONALE FOR DECISION:The intent of the existing language is to assure (where possible) a measure of diversity in signal pathwayssuch that a single natural or man-made disaster does not impair Central Station functionality. Twoindependent service pr
12、oviders are prescribed to do so.UL has found that an equivalent level of signal pathway diversity can be obtained from sometelecommunication service providers through specialized contract arrangements. The alternate languagefor these paragraphs provides additional compliance options for Central Stat
13、ions.Copyright 2016 Underwriters Laboratories Inc.UL, in performing its functions in accordance with its objectives, does not guarantee or warrant thecorrectness of Certification Requirement Decisions it may issue or that they will be recognized or adoptedby anyone. Certification Requirement Decisio
14、ns are the opinion of Underwriters Laboratories Inc. inpractically applying the requirements of the standard. They do not represent formal interpretations of thestandard under American National Standards Institute (ANSI) processes. UL shall not be responsible toanyone for the use of or reliance upon
15、 Certification Requirement Decisions by anyone. UL shall not incurany obligation or liability for damages, including consequential damages, arising out of or in connectionwith the use or reliance upon Certification Requirement Decisions. The electronic version of theCertification Requirement Decision is the current version and previously printed copies may be outdated.This document is published as a service to ULs certification customersSTANDARD NUMBER: UL 827 -2-
