Nortel Communication Server 1000S Installation And Configuration Manual page 64

Page 64 of 120 Configuring ISDN BRI hardware
553-3001-218 Standard 2.00
Figure 14
Jumper plug settings for normal power on the TX and RX leads
BRTN
TX
• Reverse power on the TX and RX leads. This option is used only in
Japan and provides power (-48V or -40V) on the RX lead and battery
return (BRTN) on the TX lead to power the terminal. To implement it,
install one jumper plug across the RX and PWR pins, and one across
the BRTN and TX pins as shown in Figure 15 on
September 2004
RX
Jumper plugs
PWR
553-7580.EPS
page 65.