Nortel Networks 1000 - Manual (Page 395)

Installation 395
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 161 "MSDL power consumption" (page 395) .
Table 161
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 162 "MSDL interface switch settings" (page 395) shows the switch
positions for the DCE and the DTE interface configurations on the MSDL
card.
Figure 103 "MSDL switch setting example" (page 396) 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 162
MSDL interface switch settings
DCE
switch DTE
switch
Interface Comment
OFF OFF RS-232
DTE/DCE is software
configured
OFF ON RS-422 DTE All switches configured
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.