Hardware manual

Issue 8 Electra Elite
5 - 28 Installing Electronic Telephone Units
4.2.7 Connections
Figure 5-15 BRT(4)-U20 Connections
Network
and CO
TELCO
U Interface / 2 Wire
NT1
NT1
ST/4 Wire
ST/4 Wire
MDF for BRT ETU
Circuit 1
Circuit 2
TA 1
TB 1
RA 1
RB 1
TA 2
TB 2
RA 2
RB 2
NT1
NT1
ST/4 Wire
ST/4 Wire
TA 3
TB 3
RA 3
RB 3
TA 4
TB 4
RA 4
RB 4
Circuit 3
Circuit 4