Provides personal desktop call recording (and telephone event detection) for analog telephones, analog trunk lines, and FXS ports. Perfect for home or small business analog systems. Relay output provided for connection to optional Algo visual and audible alerters (for ring, in-use, and message waiting indication).  
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A multi-application loud ringer and paging amplifier, the 1825 features a non-irritating and highly effective warble tone output that is ideal for general office or small plant applications. The unit is compatible with dry contact closure, analog telephones, FXS ports, and Nortel digital telephones including Norstar, Business Communication Manager (BCM), Meridian 1, and Communication Server 1000 (CS 1000).  
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