User's Manual

Introduction

The BSX Door Entry Telephone System is designed for low rise blocks of flats. It provides the

means for visitors to call an individual resident within the building and to establish two-way

speech communication (full duplex) with them. The resident is allowed full control over the

callers' access to the main entrance by means of an electric lock release or an electric lock.

The BSX includes a sophisticated microprocessor-based Control Unit which operates on the

'Telephone Exchange' principle. This approach has two main advantages over common-wired

entry phone systems ;

C Conversations are totally private.

C Any damage sustained to an individual telephone or its associated cable will not affect

the operation of the rest of the system .

Various models of front door pane and telephones may be used with the BSX equipment.

The Control Unit

The BSX Control unit is available in multiples of 8 up to 56 stations, and then a 63 station

control. (The DAX digital system is available for systems up to 256 stations). Multi entrance

systems are available with an additional CTX Control board for each entrance.

CC A CTX816 control board is used for systems up to 16 stations ( except when door

monitoring telephones are used).

* A CTX864 control board is used for any other system, or for any system using

telephones with door monitoring.

All the control equipment is installed in a lockable steel cabinet and mounted onto a sub-

chassis which can easily be removed from the cabinet to allow the installer to cut holes for

cable/conduit entry. The Control unit includes the following;

Model PSU138A or PSU138B Power Supply

Model CTX Door Controller

Model RLX Relay boards

Model TS2000 quartz reserve time-clock

A 12v 6A/H battery when standby is required (Optional)

Connections to each telephone are protected with relays and fuses and have a diagnostic led

indication .

Provision has been made for either Fail-Secure or Fail-Safe electric lock releases or electric

locks to be used. The time duration of door release operation is programmable .