Powerful Low Frequency Ringer & Paging Amplifier

The 1825 Duet Plus® auxiliary ringer is a multi-application loud ringer and paging amplifier for use with business telephone systems in office and industrial applications. Specifically designed for compatibility with Nortel systems, the Duet Plus

  Frequency, Paging, Ringer, Frequency ringer

Draft ETSI EN 301 489-1 V2.2

ETSI 6 Draft ETSI EN 301 489-1 V2.2.0 (2017-03) Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI.