Avaya 555-245-600 manual Avaya Power over Ethernet PoE switches, Available PoE Switch Options

LAN switching products

-BlackDiamond 8806 - a 6-slot non-blocking switch for access or core

-BlackDiamond 8810 - a 10-slot non-blocking switch for access or core

For information on Extreme Networks switches, see http://www.extremenetworks.com

Avaya Power over Ethernet (PoE) switches

For more information on Power over Ethernet (PoE), see A Practical Guide to Power over Ethernet by Avaya, using the following link: PoE_Guide

Available PoE Switch Options

Data and power are combined in a (PoE) switch and sent over a single cable, thus simplifying power management and cabling infrastructure and saving rack space.

Avaya offers the following PoE Converged Stackable Switches: C363T-PWR and C364T-PWR. All PoE Switches comply with the IEEE 802.3af standard.

Switch	Maximum PoE Power (W)	Number of Powered Ports in Switch
C363T-PWR	305	24
C364T-PWR	520	48

PoE is carried over the signal leads, providing remote -48V power feeds on all 10/100 ports in the switch/module (except on an expansion module in P333T-PWR). This allows the PD (Powered Device) to be up to 100m away from the switch. Each port performs a standard compatibility detection process before power is supplied to the Ethernet lines. If the PD is removed or the link is interrupted, the port polling mechanism detects this, and power is cut off to the port while the detection process is applied again.

The PoE switch applies power to the port only after it detects that a PD is actually connected to the port. Each PD has a resistance range known as a "signature." The switch knows what power has to be supplied to the device according to the signature.

Load detection is performed every 240 ms. All ports are checked for the resistance signature on

aport-by-port basis. Only non-powered ports participate in the periodic load detection. Once power is provided to a port, it is checked periodically to see if a PD is still connected. If a PD is disconnected from a powered port, then power is denied to the port. Disconnected ports then automatically join the periodic load detection cycle. Each port of the switch is protected against channel overload, short circuit, and reversed polarity that might be caused by faulty connection between two feeding channels or by a crossed cable connection.

168 Avaya Application Solutions IP Telephony Deployment Guide