326X Series Modem

	Part No. TEL–09949, Rev A
		June 2001
		Page 1 of 34
	326X SERIES MODEM
	Modem Cards, Backplanes, and Modular Nest 9 and 21 Enclosures
In This Notice	Topic	See Page
	Introduction		2
	About the 326X Series Modem Documentation Set		2
	For More Details on the 326X Modem’s		2
	Safety Information		3
	Warning Description		3
	Connecting Port Warning		3
	Installation Warning		4
	Pre-Installation Information and Activities		5
	326X Series Modem Cards and Backplanes		5
	326X Series Modem Cards		5
	326X Series Modem Card Backplanes		5
	Stand-alone Modems and Enclosure Cards: Differences		6
	A/B Switching and the A/B LED		6
	ALM LED		6
	Telephone Company Compliance—U.S.A. Models		7
	Backplane Jumpers for the Busy Out Feature		7
	Hong Kong and the United Kingdom		7
	Countries That Support Busy Out		8
	How and When is Make Busy Activated?		8
	Setting the Modem Card DIP Switch		12
	Cabling the 3262 and the 3267 (Dual Dial) Modem Cards		14
	Cabling the 3263 and the 3268 (Leased Line, Dial Restoral) Modem Cards		15
	Attaching Ferrite Beads (U.S.A., Canada, and Japan Only)		16
	Removing Audio Cable Connectors From a Modem Backplane		16
	326X Series Modem—Cabling to a Network Manager		18
	Setting Control Across Groups		22
	Example		22
	Cautions and Limitations for Network Management Cabling		23
	Daisy-Chaining NC Ports: Card Modems to Stand-alone Modems	.....	24
	Preparing the 9110 DMS for 326X Series Card Modems		26
	326X Modem Card Power Supply Requirements in 21-Card Enclosure..		26
	Removing and Installing a Backplane in Modular Nest 9 or 21 Enclosure ..		27
	Removing a 326X Backplane		28
	Installing or Replacing a 326X Backplane		30

In This Notice

Topic

See Page

ALM LED