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Testing the PFTU
%*!&()<>=:,.?
READY FOR INPUT
4
Step through the keys on the keyboard one at a time. All keyboard input
should be echoed until END is entered.
5
Exit LD 37:
****
Use Procedure 56 to test a PFTU and its interface with the system monitor.
Procedure 56
Testing the PFTU and its interface
1
Set the line transfer switch on the PFTU to BYPASS. Associated
attendant consoles should display a major alarm.
2
Set the line transfer switch on the PFTU to NORMAL.
3
Set the line transfer switch on the attendant console associated with the
PFTU to ON. Associated attendant consoles should display a major
alarm.
4
Set the line transfer switch on the attendant console associated with the
PFTU to OFF. The "major" alarm condition displayed on attendant
consoles associated with the PFTU should disappear.
5
Repeat step 2 and step 3 for each attendant console associated with the
PFTU.
6
Set the line transfer switch on the PFTU to BYPASS and test the
telephones and trunks connected to the PFTU.
•
Place an outgoing call from each telephone associated with the
PFTU. Each telephone should be connected directly to a trunk.
•
Place an incoming call on each trunk associated with the PFTU. Each
trunk should be connected directly to a telephone.
Performing acceptance tests
End of Procedure
Large System Installation and Commissioning
Page 325 of 436
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