Nortel Networks Circuit Card 311 - Manual (Page 187)

Electrical specifications 187
The Lineside T1 card requires +15 V, –15 V, and +5 V from the backplane.
One NT8D06 Peripheral Equipment Power Supply ac or NT6D40 Peripheral
Equipment Power Supply dc can supply power to a maximum of eight
Lineside T1 cards.
Table 83
Lineside T1 card - power required
Voltage Current (max.)
+ 5.0 V dc 1.6 Amp
+15.0 V dc 150 mA.
–15.0 V dc 150 mA.
The Lineside T1 card obtains its power from the Option 11C’s backplane.
Table 84
Lineside T1 card: power required
Voltage Current (max.)
5.0 V dc 150 mA.
+15.0 V dc 1.6 Amp
-15.0 V dc 1.3 Amp
Foreign and surge voltage protections
In-circuit protection against power line crosses or lightning is not provided
on the Lineside T1 card. It does protect 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.
In-circuit protection against power line crosses or lightning is not provided
on the Lineside T1 card. It does protect 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.
Environmental specifications
Table 85 "Lineside T1 card - environmental specifications" (page 188) lists
the environmental specifications of the Lineside T1 card.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
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