ITR2000A Tone Remote Desk Set Description
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Internal Microphone and Speaker
The handset must be on-hook in order to use the internal microphone, which is intended for use in low
noise environments. The internal microphone and speaker are provided to allow hands-free
communication.
Handset
The desk set is equipped with a handset with a coil cord used for receiving and transmitting calls. The
handset includes a push-to-talk (PTT) pressbar.
Connectors
The ITR2000A includes a five-pin 12 V dc nominal power connector, an eight-pin audio accessory
connector, and a modular phone line connector on the rear. The locations are shown in the figure below:
Figure 2. ITR2000A Desk Set – Rear View
Power Connector
The ITR2000A is powered by a listed ac wall transformer supplying nominal 12 V dc. The operating
range is 10.5 to 16 V dc. The five-pin power connector diagram and pinout are shown below:
Figure 3.
Pin Function
1 -IN
2 Battery +IN
3 +IN
4 -IN
5 +IN
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