Nortel Circuit Card Installation Manual page 203

NT5D11 and NT5D14 Lineside T1 Interface cards
Power requirements
The lineside T1 card requires +15 V, –15 V, and +5 V from the backplane.
One NT8D06 IPE Power Supply AC or NT6D40 IPE Power Supply DC can
supply power to a maximum of eight lineside T1 cards. See Table 78.
Table 78
Lineside T1 card – power required
Foreign and surge voltage protections
In-circuit protection against power line crosses or lightning is not provided on
the lineside T1 card. It does have protection against accidental shorts to –52 V
dc analog lines.
When the card is used to service off-premise terminal equipment through the
public telephone network, install a Channel Service Unit (CSU) as part of the
terminal equipment to provide external line protection.
Voltage
+ 5.0 V dc
+15.0 V dc
–15.0 V dc
Current (max.)
1.6 Amp
150 mA.
150 mA.
Circuit Card Description and Installation
Page 203 of 906