Hardware manual

Issue 8 Electra Elite
5 - 24 Installing Electronic Telephone Units
4.1.7 Connections
Figure 5-13 BRT(4)-U( ) ETU Connections
Network
and CO
TELCO
U Interface / 2 Wire
NT1
NT1
ST/4 Wire
ST/4 Wire
MDF for BRT ETU
Channel 1
Channel 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
Channel 3
Channel 4