Datasheet

Server
10/100 Mbps Switch
Wiring closet
3Com
®
Power over Ethernet
Midspan Solu
tion
User worksite
3Com
Intelli
Jack Switch
3Com NBX
®
phone
Desktop PC
Data
Power
Data and Pow
er
3COM
®
INTELLIJACK
™
SWITCH F
AMILY DATA SHEET, U.S.-STANDARD MODELS
2
6
Figure 1: IEEE 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 IEEE
802.3af-compliant 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 IntelliJack Switch
AC Power Supply (3CNJPSL) is required
for LANs without Power over Ethernet
capabilities.
6 LAN-facing downlink port and cabling
ar
e concealed behind the faceplate.
Server
3Com
®
SuperS
tack
®
3 Switch 4400
PWR
Wiring closet
User worksite
3Com
Intelli
Jack
Switch
3Com NBX
®
P802.3af Phone
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 w
all” mana
ged switch
comes bundled with software utilities
that help streamline administration
tasks and boost netw
or
k security
.
Advanced switching and management
features make it ideal for connecting
networked telephony. Compatible
phones can be po
w
ered from port 1,
sa
ving in wiring e
xpense. 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
disco
v
ered and controlled by most
SNMP-compliant management plat-
forms— including 3Com Network
Supervisor and HP OpenView.
Security f
eatures such as IEEE 802.1X
netw
or
k lo
g-in, M
AC filtering, and
port-based rate limiting allow IT man-
agers to prevent network access by
unauthorized users.