Table 4-2. Central Office Network Interface Codes - AT&T MERLIN LEGEND Release 2.0 Installation Section

Connecting the Control Unit to the Network Interface

Table 4-2. Central Office Network Interface Codes

Trunk
Type
LS central office trunk
GS central office trunk
DID
O P S
Tie trunk
DS1
NOTE:
The preferred network interface is the RJ48X. With the RJ48X interface, if
no connection is provided by the customer's equipment, the T1 trunk's
receive pair is looped back to the transmit pair. This simplifies
troubleshooting the T1 trunk.
In most installations, the network interface is connected through a cross-
connect field to the control unit. However, for systems with fewer than 24
stations, the trunk wires can be directly connected 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 kits.
4-4
Wiring
Federal Interface
Code for Trunk
02LS2
02GS2
02RV2-T
0 L 1 3 C
TL31M
04DU9-B
04DU9-C
Network Interface
RJ11C, RJ14C
RJ21
RJ11C, RJ14C,
R J 2 1
RJ11C, RJ14C,
R J 2 1
RJ11C
R J 2 G X
RJ48C/X
See note below.