User manual

Introduction
1
NXA-ENET24 Hardware Installation Guide
Introduction
Overview
The 24-Port Fast Ethernet PoE Switch contains 24 10BASE-T/100BASE-TX RJ-45 ports and two
combination ports—10/100/1000BASE-T ports that operate in combination with Small Form Factor
Pluggable (SFP) transceiver slots.
All the 10BASE-T/100BASE-TX ports on this switch support IEEE 802.3af standard Power-over-
Ethernet capabilities. Each port can detect connected 802.3af-compliant network devices, such as
AMX’s NXA-WAP 200 G, other third party’s wireless access points or IP phones, and automatically
supply the required DC power.
As well as its Power-over-Ethernet capabilities, the switch provides comprehensive network
management features, and is specifically designed to provide reliability and consistant performance for
audio/video streams coming from AMX’s MAX units.
Switch Architecture
The switch employs a wire-speed, non-blocking switching fabric. This permits simultaneous wire-speed
transport of multiple packets at low latency on all ports. The switch also features full-duplex capability
on all ports, which effectively doubles the bandwidth of each connection.
The PoE switch uses store-and-forward switching to ensure maximum data integrity. With store-and-
forward switching, the entire packet must be received into a buffer and checked for validity before being
forwarded. This prevents errors from being propagated throughout the network.
This switch includes two Gigabit combination ports with RJ-45 connectors and associated SFP slots.
Power-over-Ethernet Capability
The switch’s 24 10/100 Mbps ports support the IEEE 802.3af Power-over-Ethernet (PoE) standard that
enables DC power to be supplied to attached devices using wires in the connecting Ethernet cable. Any
802.3af compliant device attached to a port can directly draw power from the switch over the Ethernet
cable without requiring its own separate power source. This capability gives installers greater flexibility
in deployment locations for devices such as IP cameras and wireless access points, which translates into
greater network availability.
For each attached 802.3af-compliant device, the switch automatically senses the load and dynamically
supplies the required power. The switch delivers power to a device using the two wire pairs in UTP or
STP cable that are not used for 10BASE-T/100BASE-TX connections. Each port can provide up to 15.4
FIG. 1 Front and Rear Panels
12
3
4
56
7
89
10
11 12
13
14
15 16
17
18 19
20
21 22
23
24
26
Link/Act
PoE
25
26
PWR
Diag
Stacking
Mode
PoE/Link
Console
25
Master
Slave
1
2
11
12
13
14
23
24
100-240V~ 50-60Hz 7.5A
P
o
w
e
r
Soc
k
et
Console Port
10/100 Mbps RJ-45 Ports
Combination Port
Status Indicators (25, 26)
Mode PoE/Link Button
Port Status Indicators (1-24)
Combination RJ-45/SFP Ports
System Indicators
Stack Master Button
Stack Unit ID
Stack Unit ID LCD