NEMA BS 31057:2025
Current
Emergency Communications Audio Intelligibility Applications Guide
Hardcopy , PDF
English
01-14-2026
NEMA has created this guide to assist specifiers and Authorities Having Jurisdiction with understanding the concepts and terminology used to enhance the intelligibility of emergency voice paging systems.
| DocumentType |
Guide
|
| Pages |
31
|
| PublisherName |
National Electrical Manufacturers Association
|
| Status |
Current
|
| Supersedes |
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