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C-46 Country-Specific Information
Country-Specific
Information
Refer also to Figure C-10, which shows pin locations on Modular Nest 21 back-
planes. Modular Nest 9s have a similar layout.
Figure C-10. Modular Nest Backplane Pin Locations
(Modular Nest 21 Shown)
In Hong Kong and the United Kingdom, Busy Out backplanes are hard-wired for
Busy Out operation. These backplanes do not use pin jumpers.
Jumpers on
Left Pin Pairs
Pins
Pins
Modem A
Modem B
Modular Nest 21
Enclosure, Rear View