The Protel CTR200BB+ circuit board was manufactured from the mid 1980s to early 1990s.

- Line-Powered, requires no electricity.
- Compatible with most AE / Quadrum / GTE-style payphone housings.
- Programming updates are fully downloadable.
- Voice instructions for all calls.
- UL-listed.
- FCC Registered.

Telephone line powered. 42 VDC to 56 VDC
Loop current range: 22 mA to 90 mA POTS line, (B-1 or COCOT), loop start, standard dial tone 600/120 Hz
Required Housing: AE / Quadrum / GTE-style.
Required Dial/Hookswitch Assy: Protel or replica with 15-pin male D-sub connector.
Required Coin Acceptor/Validator: Coinco or Imonex (both require trigger switch).
Required Coin Relay/Escrow: 48V Coin Relay/Hopper.

If programming is needed, please also add payphone programming to your order.