Nortel Networks Circuit Card 311 - Manual (Page 401)

Installation 401
A stable ambient operating temperature of approximately 22

C (72

F) is
recommended. The temperature differential in the room should not exceed
±3

C (±5

F).
The internal power supply in each module provides DC power for the MSDL
and other cards. Power consumption and heat dissipation for the MSDL is
listed in
Table 175 "MSDL power consumption" (page 401) .
Table 175
MSDL power consumption
Voltage
(VAC)
Current
(Amps)
Power
(Watts)
Heat
(BTUs)
+5 3.20 16.00 55.36
+12 0.10 1.20 4.15
–12 0.10 1.20 4.15
Installation
Device number
Before installing MSDL cards, determine which of the devices in the system
are available. If all 16 devices are assigned, remove one or more installed
cards to replace them with MSDL cards.
Make sure that the device number assigned to the MSDL card is not used
by an installed card, even if one is not configured. Use the MSDL planning
form, at the end of this section, to assist in configuring MSDL cards.
MSDL interfaces
Before installing the cards, select the switch settings that apply to your
system, the interfaces, and card addresses.
Table 176 "MSDL interface switch settings" (page 401) shows the switch
positions for the DCE and the DTE interface configurations on the MSDL
card.
Figure 104 "MSDL switch setting example" (page 402) shows the
MSDL and the location of configuration switches on the MSDL. The switch
settings shown in this figure are an example of the different types of
interfaces available. Your system settings may differ.
Table 176
MSDL interface switch settings
DCE
switch DTE
switch
Interface Comment
OFF OFF RS-232
DTE/DCE is software
configured
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
.