Server
10/100 M
bps Sw
itch
Wiring closet
3Com
®
Pow
er over Ethernet
Midsp
an Solu
tion
User worksit
e
3Com Intelli
Jack Switch
3Com NBX
®
phone
Desktop PC
Data
Power
Data and Pow
er
3 C O M
®
I N T E L L I J A C K
™
S W I T C H FA M I LY D ATA S H E E T, U.S.-S TA N D A R D M O D E L S
2
6
Figure 1:
802.3af-compliant Power over
Ethernet network configuration with
power forwarding to another device.
1
3Com SuperStack 3 Switch 4400 PWR
(3C17205) delivers data and power
over Category 5/5e cabling.
2
The switched ports of the 3Com
IntelliJack Switch prioritize voice and
data traffic for connected devices.
3
Models NJ220 and NJ100 forward
Power over Ethernet to a 3Com
NBX 802.3af Phone or other 802.3af-
compliant device.
Figure 2:
Retrofitting an existing
Ethernet infrastructure to support Power
over Ethernet.
4
3Com Power over Ethernet Multiport
or Single-Port Midspan Solution
(3CNJPSE24, 3CNJPSE) injects 48 VDC
Power over Ethernet into existing
10/100 Mbps switched connections.
5
A prestandard 24-volt NBX phone can
be modified with the 3Com NBX
Phone Power Module (3CNJVOIPMOD-
NBX) to accept 48 VDC Power over
Ethernet.
Figure 3:
The 3Com Network Jack
AC Power Supply (3CNJPSL) is required
for LANs without Power over Ethernet
capabilities.
6
LAN-facing downlink port and cabling
are concealed behind the faceplate.
Server
3Com
®
SuperS
tack
®
3 Sw
itch 4400
PWR
Wiring closet
User worksite
3Com
Intelli
Jack
Switch
3Com NBX
®
P802.3af Phon
e
Desktop PC
3
4
5
1
2
3Com IntelliJack
Switch Setup
Figure 1
Figure 2
Figure 3
More cost-effective
than Category 5e
cabling, more secure
than a desktop hub
or switch
3Com IntelliJack Switch NJ220
This “in the wall” managed switch
comes bundled with software utilities
that help streamline administration
tasks and boost network security.
Advanced switching and management
features make it ideal for connecting
networked telephony. Compatible
phones can be powered from port 1,
saving in wiring expense. For opti-
mum quality and security, voice
traffic can be labeled high priority
and routed through its own VLAN.
Enterprise-ready, the NJ220 can be
discovered and controlled by most
SNMP-compliant management plat-
forms— including 3Com Network
Supervisor and HP OpenView.
Security features such as 802.1X net-
work log-in, MAC filtering, and
port-based rate limiting allow IT man-
agers to prevent network access by
unauthorized users.
