When the KSU seizes the line to the ST-TC1, a relay contact closure is provided which can be used to control a variety of equipment, such as a paging system or radio system. The closure is maintained as long as the line is seized. A 600 ? transformer-isolated audio feed is available for audio input to or output from the telephone switching unit. The ST-TC1 will pass DTMF audio from a telephone keypad or other DTMF generating device.
The ST-TC1 may be utilized to add paging zones or radio system interface to a telephone system. When any instrument in the telephone system seizes the line associated with the ST-TC1, the relay closes to activate the radio or paging function, and the audio spoken into the handset is broadcast. The ST-TC1 can not be connected to a phone line that has ringer voltage present.
The ST-TC1 can be used in conjunction with RDL's® ST-VOX1 modules to provide two-way communication. The ST-VOX1 will provide the necessary push-to-talk function to key the two-way communications systems.
- Simulate a Telco CO Line
- Connect to local telephone switch or instrument
- Add Radio Control or Paging to KSU
- Contact Closure when Line is Off-hook
- Audio Input/Output from Telephone Switching Unit
||Simulated telco central office line to feed telephone system
|Audio In / Out Impedance:
||600 O balanced
|Max. Switching Power:
||60 W, (220 Vdc, 125 Vac, 2 A)
||GROUND-REFERENCED, 24 Vdc @ 50 mA
|Ambient Operating Environment:
||0° C to 55° C
|MCM Part #:||555-18916|
|Radio Design Labs Part #:||ST-TC1|
|Package Specifications & Dimensions|
Need to Return?
|Extra Shipping Charge:||No|