RDL®

ST-TC1

Telephone System Coupler - CO Line Simulator

SKU: ST-VOX1
  • 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
  • Recommended Power Supply ( Not Included )
    PS-24AS (USA)PS-24AX (International)

    Description

    The ST-TC1 is intended to be connected to an on-site telephone system switching unit KSU. It is NOT intended to be connected directly to a telephone CO line. Connections from the ST-TC1 go into the telephone switching unit as if the ST-TC1 was an incoming phone line.

    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 Ω 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.

    Specifications

    Mic Input:5 kΩ unbalanced line
    Line Input:200 kΩ unbalanced
    Control Outputs:Open-Collector @ 25 mA, suitable to drive indicators or Slave LCR
    Relay Contacts:Double-pole-double-throw
    Max. Switching Power:60 W, (220 Vdc, 125 Vac, 2A)
    Mic Input Sensitivity:Adjustable -80 dBu to -50 dBu
    Line Input Sensitivity:Adjustable -45 dBu to -15 dBu
    Indicators:Audio threshold LED (for setting sensitivity)
    Retrigger Delay:50 ms
    Release Delay Time Adjustment Range:Relay Contacts: 70 to 260 ms
    Slave open-collector output: 15 to 260 ms
    Activation Response TimeRelay Contacts: 5 ms
    Slave open-collector output: 3 ms
    Ambient Operating Environment:0° C to 55° C
    Power Requirement:GROUND-REFERENCED 24 Vdc @ 50 mA *
    * Assumes 20 mA max load at SLAVE
    output
    Dimensions:Height: 0.7 in. (1.7 cm), Width: 3 in. (7.6cm), Depth 1.6 in. (3.9 cm)
    Package Type:Cardboard Box
    WEEE weight:0.15 lbs.
    Shipping Weight:0.2 lbs.
    Tariff code:8543.70.9860
    Package Dimensions:2 x 2 x 4 in.

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    Dimensions

    ST-TC1

    Downloads

    DocumentsFormat
    DatasheetPDF
    CAD FilesUnitsFormat
    Engineering Functional BlockAmericanDXF
    Panel Diagram - EndAmericanDXF
    Panel Diagram - FrontAmericanDXF
    Panel Diagram - EndMetricDXF
    Panel Diagram - FrontMetricDXF
    High Res ImagesFormat
    st-tc1.zipTIF
    Declaration of Conformity
    Download

    Diagrams

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