32
Chapter 3 Hardware installation
NN40020-308
•
If your system includes another expansion unit, repeat this procedure to add more
telephone lines or proceed to
Connect extensions to the expansion unit
on page 32 to add
extensions.
To connect analog telephone lines to the GATM4, GATM8, G4x16,
or G8x16
1
Obtain a 25-pair cable with an RJ-21 connector on one end.
2
Plug the RJ-21 connector of the cable into the RJ-21 connector on the front of the MBM.
Use the lower RJ-21 connector on the G4x16 and G8x16 MBMs to connect analog lines.
3
Select the appropriate option to secure the RJ-21 connector to the MBM:
•
With a straight RJ-21 connector, use the two supplied screws on the sides of the connector
to secure it.
•
With a right-angle RJ-21 connector, use the supplied screw on the left side of the
connector to secure the left side of the connector. To secure the right side of the connector,
use the supplied cable tie to fasten the 25-pair cable to the anchor on the MBM.
4
Connect the other end of the cable to the telephone company demarcation blocks of the
building.
Connect extensions to the expansion unit
Extensions connect to the expansion unit through the connectors on the MBM installed in the
expansion unit.
To connect extensions to DSM16, DSM32, ASM8, 4x16, G4x16, or
G8x16 MBMs
1
Obtain a 25-pair cable with an RJ-21 connector on one end.
2
Plug the RJ-21 connector of the cable into the RJ-21 connector on the front of the MBM.
Use the upper RJ-21 connector on the G4x16 and G8x16 MBMs to connect digital extensions.
3
Select the appropriate option to secure the RJ-21 connector to the MBM:
•
With a straight RJ-21 connector, use the two supplied screws on the sides of the connector
to secure it.
•
With a right-angle RJ-21 connector, use the supplied screw on the left side of the
connector to secure the left side of the connector. To secure the right side of the connector,
use the supplied cable tie to fasten the 25-pair cable to the anchor on the MBM.
4
Connect the other end of the cable to the local connecting blocks.
5
To connect extensions to a DSM32, repeat steps 1 to 4 for the second RJ-21 connector.
