Lucent Technologies MERLIN LEGEND Release 5.0 Installation Manual page 162

MERLIN LEGEND Communications System Release 5.0
Installation 555-650-140
Connecting the Control Unit to the Network Interface
Wiring
NOTE:
If you need to connect the trunk cords differently from the instructions on
the system forms, record each change on Form 2c, System Numbering:
Line/Trunk Jacks. See
Also, you may need to know the interface codes for network facilities.
These codes are shown in
Table 4-2. Central Office Network Interface Codes
Trunk Type
LS central office trunk
GS central office trunk
DID
OPS
Tie trunk
BRI
DS1
NOTE:
The preferred network interface is the RJ48X. If a customer's site uses the
RJ48X interface and the customer's equipment does not provide
connection, the T1 trunk's receive pair is looped back to the transmit pair.
This simplifies troubleshooting the T1 trunk from the central office.
In most installations, the network interface is connected through a
cross-connect field to the control unit. However, for systems with fewer
than 24 extensions, you can connect the trunk wires directly to the control
unit.
Appendix A, ''System Numbering
Table 4-2, by trunk type and adapter type.
Federal Interface
Code for Trunk
02LS2
02GS2
02RV2-T
OL13C
TL31M
02B1Q
04DU9-B
04DU9-C
Forms''.
Network Interface
RJ11C, RJ14C, RJ21
RJ11C, RJ14C, RJ21
RJ11C, RJ14C, RJ21
RJ11C
RJ2GX
RJ11C, RJ14C, RJ21
RJ48C/X
See note below.
Issue 1
June 1997
Page 4-3