الأهداف
By the end of this course the trainee should be able to:  Operate and maintain the various phrases of the exchange.  Set up the tariff concerned.  Analyze and deal with faults and alarms.  Check and control loads.  Test the different types of circuits.  Perform the daily routine maintenance.
الخطوط العريضة
- Call route tracing
- Input & output units and how they are linked with the system to control all the commands
- Different types of control
- How to maintain and test CSN
- How to subscribe the customer
- How to check and maintain the trunk control station (SMT)
- Methods of creating, modulating and testing link circuits
- Methods of testing and maintaining SMC,SMA,SMX and STS stations
- Methods of creating and modulating local tariff
- Power supply (SE) unit
- How to maintain SMM units, copy programs & data from hard disks to cassette tapes and recharging the exchange
- Overview of different types of faults and alarms may happen at the exchange