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Digital telephones line engineering Page 293 of 504
Telephones and Consoles Description, Installation, and Operation
Figure 47
Engineer a telephone line (Part 3 of 8)
553-AAA2055
Is the impulse
noise within limits?
(Procedure 5)
Is the background
noise witin
limits?
Install digital telephone
and check performance.
Is
performance
OK?
Go to
Step 16
Go to
Step 16
Go to
Step 16
NO
NO
End of
procedure.
YES
NO
YES
YES
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