3com 4400 SE User Manual

C

HAPTER

 2: I

NSTALLING

 

THE

 S

WITCH

■

3Com NBX 2102PE Business Phone (3C10226PE)

■

3Com NBX 2102PEIR Business Phone with IR (3C10228RPE)

■

3Com NBX 3102 Business Phone (3C10402A)

■

3Com NBX ATA Business Phone (3C10400)

■

Network Jacks:

■

3Com NJ90 (3CNJ90)

■

3Com NJ95 (3CNJ95

■

3Com NJ100 (3CNJ100, 3CNJ100-CRM)

■

3Com NJ105 - 3CNJ105

■

3Com NJ105 + forwarding (3CNJ105)

■

3Com NJ200 (3CNJ200, 3CNJ200-CRM)

■

3Com NJ200 + forwarding (3CNJ200)

■

3Com NJ205 (3CNJ205)

■

3Com NJ205 + forwarding (3CNJ205)

.

For further information about Power Over Ethernet, refer to “Power 
Management and Control” in the Switch Implementation Guide supplied 
on the CD-ROM that accompanies your Switch. Power over Ethernet 
management is available using the web interface or the command line 
interface (CLI).

All of the ports on the front of the Switch 4400, 4400 SE and 4400 PWR 
are Auto-MDIX, that is they have a cross-over capability. The port can 
automatically detect whether it needs to operate in MDI or MDIX mode. 
Therefore you can make a connection to a port with a straight-through 
(MDI) or a cross-over cable (MDIX).

If auto-negotiation is disabled, all the Switch ports are configured as 
MDIX (cross-over). If you want to make a connection to another MDIX 
port, you need a cross-over cable. Many ports on workstations and 
servers are configured as MDI (straight-through). If you want to make a 

DUA1720-3AAA07.book  Page 32  Wednesday, March 17, 2004  1:14 PM