Connecting The Control Unit To The Network Interface - AT&T MERLIN LEGEND Release 3.0 Installation Manual

Wiring
NOTE:
you need to connect the trunk cords differently from the instructions on the
If
system forms, record each change on Form 2c, System Numbering:
Line/Trunk Jacks. See Appendix A, "System Numbering Forms. "
Also, you may need to know the interface codes for network facilities, These
codes are shown in Table 4–2, by trunk type and adapter type.
Table 4-2. CentraI Office Network Interface Codes
Trunk Type
LS central office trunk
GS central office trunk
DID
OPS
Tie trunk
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.
When constructing wiring fields between the network interface and the control
unit, you must order hardware as individual parts, Do not use Interconnect
Wiring or Systimax wiring kits.
Federal Interface
Code for Trunk
02LS2
02GS2
02 RV2-T
0L13C
TL31M
04DU9-B
04DU9-C

Connecting the Control Unit to the Network Interface 4-3

Network Interface
RJ11C, RJ14C. RJ21
RJ11C, RJ14C, RJ21
RJ11C, RJ14C, RJ21
RJ11C
RJ2GX
RJ48C/X
See note below.