Avaya 1000 Series, Reference

Page: 328 / 700

Pin Signal Name EIA Circuit DTE DCE
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 146: Environmental requirements on page 328.
Table 146: 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
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 147: MSDL power
consumption on page 329.
NT6D80 MSDL card
328 Circuit Card Reference July 2011
Comments? infodev@avaya.com