The WMS-300L Wall Mount User Station w/ A4F Headset Connector from Telex is designed to work with the TW Intercom System. The WMS-300L can operate in an open listening mode with the panel mounted loudspeaker as well as with a headset or a handset. In this mode, almost any headset or handset can be used while the loudspeaker is turned off. This method can be extended by using the loudspeaker for monitoring and the headset or handset for conversation.
The WMS-300L is perfect for permanent installations and includes the following features: a speaker on-off switch, two-channel selection, headphone/loudspeaker volume control, a sidetone control and latching and momentary-action microphone on-off switches.
The WMS-300L wall mount speaker station is designed to work within the TW Intercom System
It fits directly into a standard 4-gang electrical conduit box (2.25" (57.2mm) deep)
The rear section is not enclosed and sets the back-box to provide a housing when installed
This user station is perfect for permanent installations where a wall mounted station can provide an unobtrusive operating position
Most often it is located where the operator can conveniently attend to on-going operations while wearing a headset or listening to the loudspeaker
Typically, the WMS-300L is a very practical user station since it can operate in an open-listening mode with the panel-mounted loudspeaker as well as privately with a headset or a handset. In the open-listening operating mode, with both the loudspeaker and an external microphone turned on, acoustic feedback is suppressed by adjustment of a front panel sidetone (balance) control. This control cancels the originating microphone signal in the local loudspeaker
Most any type of microphone can be used, a hand held push-to-talk microphone, a headset or handset microphone
In the private operating mode, almost any headset or handset can be used while the loudspeaker is turned off. This method can be extended by using the loudspeaker for monitoring and the headset or handset for conversation
Practical operating features include two-channel selection, latching and momentary-action microphone on-off switches, a speaker on-off switch, a sidetone control and a headphone/loudspeaker volume control
Screw terminals counted on the circuit card are provided for user station interconnection to line. A two pair shielded cable such as Belden 8723 or equivalent is recommended since it allows each channel to be carried over a shielded pair, reducing the possibility of crosstalk between channels
