Delta Computer Services

CS200 "Call Sign" switch

Switches calls on distinctive ringing.

• Description of the CS200 Call Sign switch
• Features
• Specification
• Requirements and Recommendations

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Description of the CS200 Call Sign switch

If you subscribe to BT Call Sign then the Lineplex CS200 Call Sign switch is for you! It recognises normal and distinctive ringing and switches incoming calls to one of its two ports: normal ringing to port 1, distinctive ringing to port 2.

Each of the two ports (standard BT sockets) can be connected to a telephone, fax, modem or answering machine.

So, for example, you could use your second number as a fax number, plug the fax into port 2 and all fax calls will be routed correctly!

Or, if you are sharing the line between business and home, you could use the second number for the home phone and the CS200 Call Sign switch will automatically ring the phone(s) attached to port 2 when a caller dials your home number.

If you are a textphone user, you could use port 1 for an ordinary telephone and port 2 for the textphone.

An important feature of the CS200 is "barge-in protection": an engaged signal is supplied to the unused port so another party cannot interrupt or listen-in to a call in progress.

Read about example applications of the CS200.

Features of the CS200 Call Sign switch

• Uses BT "Call Sign" distinctive ringing to switch calls to port 2; normal ringing calls go to port 1.
• Visual ringing indication
• Call Progress indication
• Call Protection - a call in progress cannot be interrupted or listened to by someone on the other port.
• Incoming CLI is passed through on port 1 only.
• In the event of power failure, port 1 remains operative.
• BABT approved
• Manufactured in the UK by Lineplex Systems.

Specification of the CS200 Call Sign switch

The CS200 Call Sign switch package includes:

• CS200 Call Sign switch main unit with cable and standard (BT) telephone plug
  • Dimensions: 6" x 4" x 1.75" approx. (155mm x 90mm x 45mm approx.)
  • Mass: 750g approx
  • REN = 1 (nominal)*
  • Power consumption 8W
  • Ambient temperature range 10C to 35C
  • Relative Humidity 20% to 80% non-condensing
• Power supply (230V 50/60Hz) plug-in transformer

* Actually the REN value of the CS200 is almost negligible. When calculating the REN load of your telephone equipment, remember also that the CS200 "hides" the REN of devices attached to the port not being rung.

Requirements and Recommendations

You will need the following items to be able to use the CS200 Call Sign switch:

• Standard BT phone socket on an analogue line or the phone socket on an ADSL line - but see our page on ADSL Issues (opens in new window).
• You must subscribe to BT's Call Sign service. This is available for most UK subscribers for a small quarterly charge.
• Standard 13A mains power socket, 230V 50/60Hz
• Recommended for use in the United Kingdom (not supported outside the UK).

Some customers with "BT Featureline" systems report difficulty getting the CallSign service set up. We recommend that you get the CallSign service up and running before ordering your CS200.

Important warranty information.

• Like all telephone equipment connected to a landline, this product may be damaged by voltage surges during thunderstorms. Such damage is not covered by the warranty.

Compare the CS200 with the TwinTalk.

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