Mike's PBX Cookbook

Norstar E&M Trunks

The following notes apply to interfacing a Norstar with a Motorola Vanguard 320 VoIP Gateway, but may be adapted for other E&M (tie trunk) applications.

In general

Norstar Programming

Hardware - TrunkMod allows you to configure the Trunk Cartridges in the Trunk Module. Press CHANGE to select the E&M setting.

Note: You cannot change this setting unless you first disable the Trunk Cartridge using Module Status in Maintenance.   Trunk Cartridge slots in the module are numbered from left to right. Remember to enable the Trunk Cartridge when you have completed programming!

Testing:

Idle: E lead = -48v / M lead = 0v
Seized: E lead = 0v / M lead = -48v

Verify far-end circuits by activating near-end M lead and listening for far-end dial tone.
Verify near-end circuits by activating near-end E lead and listening for near-end dial tone.

 

Vanguard RJ-45 Wiring

RJ45 plug

Connect the Norstar E&M trunks to the Vanguards RJ-45 connector:

1 2 3 4 5 6 7 8
SG E R1 T1 R T M SB

 

Trunk Module E&M wiring chart

It is recommended, to retain emergency telephone function, to install a Loop Start Trunk Cartridge in Slot 1 of the Trunk Module. E&M cards are only TWO circuit!

Pin Wire color Port Service Line
26
1
White-Blue
Blue-White
X01 T
R
1
27
2
White-Orange
Orange-White
X01 T1
R1
1
28
3
White-Green
Green-White
X01 E
SG
1
29
4
White-Brown
Brown-White
X01 M
SB
1
30
5
White-Slate
Slate-White
X02 T
R
2
31
6
Red-Blue
Blue-Red
X02 T1
R1
2
32
7
Red-Orange
Orange-Red
X02 E
SG
2
33
8
Red-Green
Green-Red
X02 M
SB
2
34
9
Red-Brown
Brown-Red
X05 T
R
5
35
10
Red-Slate
Slate-Red
X05 T1
R1
5
36
11
Black-Blue
Blue-Black
X05 E
SG
5
37
12
Black-Orange
Orange-Black
X05 M
SB
5
38
13
Black-Green
Green-Black
X06 T
R
6
39
14
Black-Brown
Brown-Black
X06 T1
R1
6
40
15
Black-Slate
Slate-Black
X06 E
SG
6
41
16
Yellow-Blue
Blue-Yellow
X06 M
SB
6
42
17
Yellow-Orange
Orange-Yellow
X09 T
R
9
43
18
Yellow-Green
Green-Yellow
X09 T1
R1
9
44
19
Yellow-Brown
Brown-Yellow
X09 E
SG
9
45
20
Yellow-Slate
Slate-Yellow
X09 M
SB
9
46
21
Violet-Blue
Blue-Violet
X10 T
R
10
47
22
Violet-Orange
Orange-Violet
X10 T1
R1
10
48
23
Violet-Green
Green-Violet
X10 E
SG
10
49
24
Violet-Brown
Brown-Violet
X10 M
SB
10
50
25
Violet-Slate
Slate-Violet
---- ---- no connection
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