Telstra Commander E105 Installation And Maintenance Manual page 27

Introduction ...................................................................................................... 2-1
General Description ............................................................................................ 2-1
Power and Terminating Board .........................................................................................
Optional Facilities Board (Optional) .................................................................................
Circuit Blocks . Power and Terminating Board ........................................................... 2-3
Transformer ....................................................................................................................
Power Supply .................................................................................................................
Electronic Choke ............................................................................................................
Powerfail ........................................................................................................................
Exchange Line Protection ................................................................................................
System Bus .....................................................................................................................
Circuit Blocks . Optional Facilities Board ................................................................. 2-5
Microcomputer Unit (MCU) ...........................................................................................
Data Transmit and Receive ..............................................................................................
Door Station Interface .....................................................................................................
External Music Source Interface ......................................................................................
2-2
2-2
2-3
2-3
2-3
2-3
2-3
2-3
2-5
2-5
2-5
2-5