Nortel Networks 1000E warranty Contacts in Pftu, Bl-R

Page 458 of 488 Installing and cross-connecting an external alarm from a PFTU

Figure 155

Contacts in PFTU

Normally connected to a

CO trunk

Normally connected to a telephone

PFT 1 on PFTU

7T (R-O)

7R (O-R)

5T (W-S)

5R (S-W)

8T (R-G)

8R (G-R)

6T (R-BL)

6R (BL-R)

Normally connected to a

trunk line card

Normally connected to a

telephone line card

Table 62

PFTU connections (Part 1 of 3)

Unit	Pair	Color	Normal mode	Failure mode
	5T	W-S	Makes with 6T and 6R	Opens 6T and 6R
	5R	S-W		Makes with 7T and 7R
P
	6T	R-BL	Makes with 5T and 5R	Open
F
	6R	BL-R
T
	7T	R-O	Makes with 8T and 8R	Opens 8T and 8R
1	7R	O-R		Makes with 5T and 5R
	8T	R-G	Makes with 7T and 7R	Open
	8R	G-R

553-3041-210 Standard 4.00 September 2007