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Part No. TEL–09949, Rev A
June 2001
Pre-Installation Information and Activities
Page 8 of 34
Countries That Support Busy Out
Some backplanes have a Busy Out feature and are intended for use with dial modems
(models 3262 and 3267). In some countries, leased modems (models 3263 and 3268)
use Busy Out for dial restoral. The following table shows which countries use the
Busy Out feature.
How and When is Make Busy Activated?
Make Busy versions of Modular Nest 9 and Modular Nest 21 backplanes (which
install in a Modular Nest enclosure with card modems) come equipped with the
Busy Out feature. This feature causes a Busy Out modem to “appear busy” to the
central office when:
• Power is disconnected from the Modular Nest enclosure
• The modem card is not present in its slot
• Busy Out=ON (the option is set through the front panel menu, the AT ACU,
or a network manager)
Busy Out is intended for use with Model 3262 and 3267 dial modems. In some
countries, it is also used in dial-restoral mode on Model 3263 and 3268 leased line
modems.
Countries that Support the Busy Out Option
Country 3262 and
3267
3263 and
3268
Australia Yes Yes
Belgium Yes Yes
Canada Yes No
Denmark Yes Yes
Hong Kong Yes No*
Ireland Yes Yes
Sweden Yes Yes
Switzerland Yes Yes
United Kingdom Yes Yes*
United States Yes Yes
All Others No Yes