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DynaMetric
Instructions
TRI-804 Telephone Recorder Interface
Audio and Handset OFF when ON-HOOK
P/N 43420
Patent # 5,835,585
FOR LEGAL USE ONLY 9-17-01
www.DynaMetric.com Page 1of 2©DynaMetric 2001 Doc 43421
The TRI-804 Telephone Recorder Interface provides clear analog audio of both sides of the
conversation to loggers from almost all digital, electronic or analog telephones that have modular
connected handsets. The TRI-804 detects handset ON/OFF-HOOK with any desk top telephone
set that cradles the handset in cavities in the telephone housing. It can be used on wall mounted
telephones of this type as well as those resting on the desk.
The unit has the following features:
•Picks up and isolates the full duplex audio from the handset circuits and outputs it to the
recorder on the center pair of the RJ-11 output jack.
•Mutes handset when ON-HOOK to avoid inadvertent recording of room conversations
between calls. Cut Off Modules not needed for either the "hot handset" or for security
reasons.
An LED on the TRI-804 is lit whenever the handset is OFF-HOOK indicating that both it and
the output to the recorder are activiated.
•Powered by a 6 VDC plug-in AC Adapter (P/N 39184) furnished with each unit.
Installation:
Mount the TRI-804 on the side of the telephone base adjacent to the earphone end of the handset
when it is ON-HOOK. Press it lightly in place on the adhesive pad so it can easily be moved if
necessary.
Remove the handset coil cord from base of phone and plug in pigtail from TRI-804 in its place.
Plug cord from power cube into TRI-804 and plug power cube into adjacent 115 VAC outlet. Plug
handset coil cord into TRI-804. Connect recorder to RJ-11 output jack.
