AS2440 - Cable Intercom
The AS2440 Cable Intercom Unit provides an Omnibus type of communications between numerous users all connected on a common twisted pair cable.
Each unit is powered locally via an external in-line PSU (24Vdc) which can be supplied with 110 to 240Vac. If necessary it could be powered from an existing 24V source or a 24V battery supply.
Connection to line is via standard RJ45s connecting to Cat5 cable linking the units and utilising the GREEN & BLUE pairs of the cable.
Open communications from line is via the integral front panel speaker. To make & receive closed communications, this is done via the handset plugged into the units RJ12 connector. The handset used has a 5m coily cord and a noise cancelling microphone.
Front panel lamps are also provided to mimic the operation of the system.