Nortel Networks 1000 - Manual (Page 394)

394 NT6D80 MSDL card
Table 159
RS-422 interface pin assignments (cont’d.)
Pin Signal Name
EIA
Circuit DTE DCE
17 Receive Signal Timing (RSTa) DDa X
20 Data Terminal Ready (DTR) CD X
23 Terminal Timing (TTa) DAb X
24 Terminal Timing (TTb) DAa X
Implementation guidelines
The following are guidelines for engineering and managing MSDL cards:
•
An MSDL can be installed in any empty network card slot.
• A maximum of eight MSDL cards can be installed in a fully occupied
module because of the module’s power supply limitations.
• The Clock Controller card should not be installed in a module if more
than 10 MSDL ports are configured as active RS-232 (rather than
RS-422) ports in that module because of the module’s power supply
limitations.
• The MSDL address must not overlap other card addresses.
• Before downloading a peripheral software module for an MSDL,
disable all MSDL ports on cards running the same type of operation.
Environmental and power requirements
The MSDL card conforms to the same requirements as other interface
cards. The temperature, humidity, and altitude for system equipment,
including the MSDL, should not exceed the specifications shown in
Table
160 "Environmental requirements" (page 394) .
Table 160
Environmental requirements
Condition Environmental specifications
Operating
Temperature
Relative Humidity
Altitude 0

to 50

C (32

to 122

F)
5% to 95% non-condensing
3,048 meters (10,000 feet) maximum
Storage
Temperature
Relative Humidity –50

to 70

C (–58

to 158

F)
5% to 95% non-condensing
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.