ADTRAN Type 400 warranty Connections, Cable Pairs

8							1
P1
DRR	DRT	DTT	DTR	TR	TT	RR	RT

Modular Connector

RJ-48
8 7 2 1
Terminal	P1	Frame	L1
Barrier		Ground
Strip		Lug
	J1
	Card Edge
	Connector
	Mounting
	Holes

Figure 2. T400 LP Housing with Cover Open

The ground lug provides an external Frame Ground connection for pins 11 and 27 of the plugin’s gold finger card edge. Insert the grounding wire into the housing through the Network portal of the rear panel, as illustrated in Figure 3.

CUSTOMER

NETWORK

Figure 3. T400 LP Housing Rear Panel

3. CONNECTIONS

The barrier strip provides screw-down terminals for network and customer signal interfaces. Customer- side connections are usually made through the RJ-48 connector which is prewired to the barrier strip. To connect to the barrier strip, conductors should be placed beneath the square washer of each screw terminal and tightened. Table 1 provides cable pair connections and descriptions.

The T400 LP housing is compatible with other loop- powered T400 units. Table 2 describes the terminal barrier strip and circuit card gold finger connector interface signal assignments.

Table 1.	Cable Pairs
Pair*	Description
RT, RR	From Network
TT, TR	To Network
DRT, DRR	To Customer
DTT, DTR	From Customer

* The conductors of each pair are not polarity sensitive.

Table 2. Barrier Strip Interface Connection to

Card Edge Connector

Terminal Barrier	Circuit Card Gold Finger
Strip (P1)	Connector
DRT	5
RT	7
RR	13
DRR	15
TT	41
TR	47
DTR	49
DTT	55

2 Section 61212007L1-5, Issue 2 61212007L1-5B