Cisco WS-X4604-GWY - VoIP Gateway Especificaciones descargar pdf (Pagina 45)

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Cisco IP Telephony Network Design Guide

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Chapter 2 Campus Infrastructure Considerations

Power to IP Phones

The inline method of supplying power requires the new power-enabled line card

for the switch. This mechanism is currently available in the following

Cisco Catalyst systems:

• Catalyst 6000 Family Switches with minimum Cisco CatOS Release 5.5 or

later.

• Catalyst 4000 Family Switches (Catalyst 4006 with Power Entry Module and

Auxiliary Power Shelf. Require minimum of two power supplies to power

240 ports.) Minimum Cisco CatOS Release 6.1 or higher.

• Catalyst 3524-PWR (standalone 24-port 10/100 two gigabit uplinks).

Minimum Cisco IOS Release 12.0(5).XU or higher.

Figure 2-5) illustrates the new Catalyst 6000 power-enabled line card.

Figure 2-5 Catalyst 6000 Power-Enabled Line Card

Before the Catalyst switch applies power, it first tests for the presence of an IP

phone. By first testing for the unique characteristics of the Cisco IP Phone and

then applying power, using a low current limit and for a limited time, the Catalyst

switch avoids damage to other types of 10/100 Ethernet terminating devices.

Daughtercard

provides

inline power

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Cisco WS-X4604-GWY - VoIP Gateway Especificaciones Pagina 45