NEC DS1000 Correspondence Course Workbook page 54

DS1000/2000 Correspondence Course
DS1000 System Installation
To CO 1-3
on DS1000
Cabinet
To CO 1-3
on DS1000
Cabinet
54 DS1000/2000 Workbook
Punch down the analog trunk cables.
The base system connects 3 loop start CO trunks. With the Expansion
Board installed, the system provides a total of 6 loop start CO trunks.
1. Using the following illustration as a guide, install additional modular
jacks as required.
The telco may provide your trunks in a single RJ-25C jack or in
multiple RJ-11C jacks.
2. Wire the additional modular jacks as shown.
3. Plug line cords from the telco mod jacks to the system mod jacks as
shown.
BLK BLUE GRN
1T
3R
2T
2R
3T
1R
YEL WHT RED
BLK BLUE GRN
YEL WHT RED
(Connections for CO 1-3 shown)
RED WHT YEL
GRN BLUE BLK
RED WHT YEL
1R
1T
GRN BLUE BLK
RED WHT YEL
2R
2T
GRN BLUE BLK
RED WHT YEL
3R
3T
GRN BLUE BLK
From
Telco RJ-25C
From
Telco RJ-11C
From
Telco RJ-11C
From
Telco RJ-11C
NEC America