Nortel M3110 Installation Manual page 297

Figure 47
Engineer a telephone line (Part 7 of 8)
[ 27 ]
[ 28 ]
[ 30 ]
[ 31 ]
Measure the DC loop
resistance.
(Procedure 8)
Is the loop
resistance less
than 175 chm?
YES
Measure loop insertion
loss at 256 kHz.
Is the insertion
loss less
than 12.0 dB?
YES
Go to
Step 32
Telephones and Consoles
Digital telephones line engineering
[ 29 ]
NO
Install new cable.
NO
Go to
Step 32
Description, Installation, and Operation
Page 297 of 504
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