Telstra Commander E105 Installation And Maintenance Manual page 4

Chapter Three - Keystations
Introduction .............................................................................................................................
General Description .................................................................................................................
Keystation Main Board ...................................................................................................
Hold and Ring Detect Board ...........................................................................................
Keypad Assembly ...........................................................................................................
Circuit Blocks ..........................................................................................................................
Microcomputer Unit Circuit (MCU Circuit) .................................................................... .3-3
Power Supply .................................................................................................................
Isolation Transformer .......................................................................................................
Data Transmit and Receive ..............................................................................................
Speech Circuit ................................................................................................................
Tone Generator ...............................................................................................................
Audio Selector ................................................................................................................
Audio Amplifier ...............................................................................................................
Line Access Circuit ........................................................................................................
HRDB-E Board (In Master Keystation) .......................................................................... 3-4
Chapter Four - Hardware Installation
Introduction .............................................................................................................................
Component Safety Precautions ................................................................................................
Installation Checklist ................................................................................................................
Installation Procedures .............................................................................................................
Sales Form Completion/Equipment Ordering ................................................................. .4-3
Locate and Mount Equipment .........................................................................................
Optional Facilities Board Installation (OFB-E) ............................................................... 4- 11
Connect and Terminate Cables ..................................................................................... .4- 12
Power-Fail Telephone ..................................................................................................
Protective Earth ...........................................................................................................
General Procedure .................................................................................................................
Power Up.. ..................................................................................................................
Check Cabling .............................................................................................................
Power Down ...............................................................................................................
Plug in Keystations .......................................................................................................
Keystation Self Test .....................................................................................................
Test Mode Entry ..........................................................................................................
Programming.. ..............................................................................................................
Defective Equipment ....................................................................................................
3 - 1
3 - 1
3-2
3-2
3 - 2
3-3
3-3
3 - 3
3-4
3-4
3 -4
3 -4
3 -4
.3-4
4-2
4-3
.4-3
.4-18
.4-19
.4-20
.4-20