Power Budgeting

Implementation

AT-PC232/POE Media Converter Installation Guide

The AT-PC232/POE Media Converter can provide a maximum of 15.4 W of power on its twisted pair port (Port 2), along with standard 10/100 Mbps Ethernet functionality.

The AT-PC232/POE Media Converter smart power management functionality supports all of the IEEE 802.3af powered device classes listed in Table 2.

Table 2. IEEE 802.3af Class vs. Power Levels

 

 

Minimum Power

Maximum Power

Class

Usage

Levels Output at

Levels Output at

 

 

the PSE

the PD

 

 

 

 

 

 

 

 

0

Default

15.4W

0.44W to 12.95W

 

 

 

 

1

Optional

4.0W

0.44W to 3.84W

 

 

 

 

2

Optional

7.0W

3.84W to 6.49W

 

 

 

 

3

Optional

15.4W

6.49W to 12.95W

 

 

 

 

If the twisted pair port is connected to a network node that is not a powered device (that is, a device that receives its power from another power source), the port functions as a regular Ethernet port, without PoE. The PoE feature remains enabled on the port but no power is delivered to the device.

A standard Ethernet twisted pair cable contains four pairs of strands for a total of eight strands. 10/100 Mbps network traffic requires only four strands (1, 2, 3, and 6), leaving four strands in the cable unused (4, 5, 7, and 8).

The PoE standard, IEEE 802.3af, describes two alternative ways for delivering power to a powered device (PD) over twisted pair cabling. Alternative A uses the same strands that carry the network traffic.

Alternative B uses the spare strands. The PoE implementation on the AT- PC232/POE Media Converter is Alternative A, where power is transmitted over strands 1, 2, 3, and 6.

PD’s that comply with the IEEE 802.3af standard typically support both power delivery methods. So long as a PD is compliant with the standard, it should be able to receive its power from the media converter while using either a straight or cross-over cable. The PoE feature on the AT-PC232/ POE Media Converter should also work with most legacy PD’s as long as the device can be powered on pins 1, 2, 3, and 6.

25

Page 25
Image 25
Allied Telesis AT-PC232/POE manual Power Budgeting Implementation, Minimum Power Maximum Power Class

AT-PC232/POE specifications

Allied Telesis AT-PC232/POE is a versatile and robust power-over-Ethernet (PoE) switch that effectively meets the needs of small to medium-sized networks. Designed for user-friendly operation and scalability, this switch caters to the increasing demand for power and data connectivity in various environments, from small offices to larger enterprise applications.

One of the main features of the AT-PC232/POE is its capability to deliver both data and electrical power over a single Ethernet cable. This functionality simplifies installations of network devices such as IP cameras, VoIP phones, and wireless access points, reducing cabling costs and improving site aesthetics. The switch can supply up to 15.4 watts of power per port, adhering to the IEEE 802.3af PoE standard. This enables straightforward connection to devices without needing additional power sources, making it a convenient choice for businesses looking to streamline their operational efficiency.

In terms of design, the AT-PC232/POE is compact and rack-mountable, allowing for efficient use of space in server rooms and network closets. Its fanless operation ensures quiet performance, making it suitable for noise-sensitive environments. The switch is also equipped with LED indicators that provide at-a-glance updates on power status, network activity, and port statistics.

The AT-PC232/POE utilizes advanced networking technologies such as VLAN (Virtual Local Area Network) support and QoS (Quality of Service). VLAN support allows network administrators to segment network traffic for better performance and security, while QoS capabilities prioritize critical data packets, ensuring that important applications such as video conferencing and VoIP operate smoothly without interruption.

Another significant characteristic of this switch is its management capabilities. Allied Telesis provides a web-based graphical user interface (GUI) for easy configuration and monitoring, allowing administrators to quickly set up networks and troubleshoot issues. Security features such as port security and access control lists help prevent unauthorized access and ensure that the network remains secure.

In summary, the Allied Telesis AT-PC232/POE switch combines efficient power delivery with sophisticated networking features, making it an excellent choice for businesses looking to enhance their network infrastructure. Its compact design, ease of use, and management capabilities position it as a reliable solution for modern networking demands.