Installing and wiring telephones and trunks

Table 18: Pin assignments for 25-pair connector (continued)

32

R-O

TLC2

Tip-PBXLine Port 2

 

 

 

 

7

O-R

RLC2

Ring-PBXLine Port 2

 

 

 

 

33

R-G

TST2

Tip-Emergency Terminal 2

 

 

 

 

8

G-R

RST2

Ring-Emergency Terminal 2

 

 

 

 

34

R-BR

TTC3

Tip-PBXTrunk Circuit 3

 

 

 

 

9

BR-R

RTC3

Ring-PBXTrunk Circuit 3

 

 

 

 

35

R-S

TTK3

Tip-COTrunk Circuit 3

 

 

 

 

10

S-R

RTK3

Ring-COLine Port 3

 

 

 

 

36

BK-BL

TLC3

Tip-PBXLine Port 3

 

 

 

 

11

BL-BK

RLC3

Ring-PBX Line Port 3

 

 

 

 

37

BK-O

TST3

Tip-Emergency Terminal 3

 

 

 

 

12

O-BK

RST3

Ring-Emergency Terminal 3

 

 

 

 

38

BK-G

TTC4

Tip-PBXTrunk Circuit 4

 

 

 

 

13

G-BK

RTC4

Ring-PBXTrunk Circuit 4

 

 

 

 

39

BK-BR

TTK4

Tip-COTrunk Circuit 4

 

 

 

 

14

BR-BK

RTK4

Ring-COTrunk Circuit 4

 

 

 

 

40

BK-S

TLC4

Tip-PBXLine Port 4

 

 

 

 

15

S-BK

RLC4

Ring-PBXLine Port 4

 

 

 

 

41

Y-BL

TST4

Tip-Emergency Terminal 4

 

 

 

 

16

BL-Y

RST4

Ring-Emergency Terminal 4

 

 

 

 

42

Y-O

TTC5

Tip-PBXTrunk Circuit 5

 

 

 

 

17

O-Y

RTC5

Ring-PBXTrunk Circuit 5

 

 

 

 

43

Y-G

TTK5

Tip-COTrunk Circuit 5

 

 

 

 

18

G-Y

RTK5

Ring-COTrunk Circuit 5

 

 

 

 

44

Y-BR

TLC5

Tip-PBXLine Port 5

 

 

 

 

19

BR-Y

RLC5

Ring-PBXLine Port 5

 

 

 

 

45

Y-S

TST5

Tip-Emergency Terminal 5

 

 

 

 

20

S-Y

RST5

Ring-Emergency Terminal 5

 

 

 

 

46

V-BL

COM1

Common 1 Relay Contact

21

BL-V

NO1

Normally Open 1 Contact

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102 Installing and Connecting the MDF and Telephones

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