Nortel 1000 Installation And Commissioning Manual page 454

Page 454 of 466
Figure 183
Contacts in PFTU
Normally
connected
to a
CO trunk
Normally
connected
to a
telephone
Table 64
PFTU connections (Part 1 of 3)
Unit
P
F
T
1
NN43041-310 Standard 01.11
Installing and cross-connecting an external alarm from a PFTU
PFT 1 on PFTU
7T (R-O)
7R (O-R)
5T (W-S)
5R (S-W)
Pair Color
5T W-S
5R S-W
6T R-BL
6R BL-R
7T R-O
7R O-R
8T R-G
8R G-R
October 2008
8T (R-G)
8R (G-R)
6T (R-BL)
6R (BL-R)
Normal mode
Makes with 6T and 6R
Makes with 5T and 5R
Makes with 8T and 8R
Makes with 7T and 7R
Normally
connected
to a
trunk line card
Normally
connected
to a
telephone line card
Failure mode
Opens 6T and 6R
Makes with 7T and 7R
Open
Opens 8T and 8R
Makes with 5T and 5R
Open