AT&T 518-600-016 manual A Merlin II system behind-switch operation System Overview

Central office lines \

25 Pair cable

/

Network interface

66Type hardware

DIW cable

DIW cable

Digital PBX (System 25, System 75, or System 85)

Jack Field for outside lines

Z122C Box

with

Z61OA

Adapters

D2R

cords

Power Supply

4 0 8		4 0 8		4 0 8
	PFT		PFT			PFT
	0 4		0 8			1 2
	0 3		0 7		1 1
	0 2		0 6	1 0
	01		0 5		0 9

0 8		1 6		2 4
0 7		1 5	23
0 6	1 4		22
0 5		1 3		2 1
0 4		1 2		20
03		1 1		19
02		1 0	1 8
0 1	0 9		1 7

4 0 8		4 0 8
	PFT			PFT
1 6			20
	1 5			19
1 4				18
			17
	1 3

3 2	4 0
3 1	39
3 0	38
2 9	37
	36
2 8
2 7	35
2 6	34
2 5	33

D8W

cords

\

To voice terminals and adjunct equipment

/

MERLIN II System contol unit

FIGURE 1-2 A MERLIN II system behind-switch operation.

1-6 System Overview