Cisco WS-X4604-GWY - VoIP Gateway Especificaciones descargar pdf (Pagina 43)

2-9

Cisco IP Telephony Network Design Guide

78-11103-03

Chapter 2 Campus Infrastructure Considerations

Physical Connectivity Options

This section describes the various ways in which IP phones and computers can be

connected to the network (see Figure 2-4).

Figure 2-4 Network Connectivity Options

The first option shown in Figure 2-4 is to connect the IP phone to the switch and

to connect the data device (computer or workstation) to the switched Ethernet port

on the IP phone, as described in the “Network Infrastructure” section on page 2-5.

This is the most common connectivity option and aids in rapid deployment with

minimal modifications to the existing environment. This arrangement has the

advantage of using a single port on the switch to provide connectivity to both

devices. Also, no changes to the cabling plant are required if the phone is line

powered (see the “Power to IP Phones” section on page 2-10). The disadvantage

is that, if the IP phone goes down, the computer also loses connectivity.

The second option shown in Figure 2-4 is to connect the IP phone and the

computer using different switch ports. Although this option doubles the switch

port count for every user, it provides a level of redundancy for the user. If the

phone goes down, the PC is not affected, and vice versa. Also, you can connect

Single

cable

Soft phone

Multiple

cables

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Cisco WS-X4604-GWY - VoIP Gateway Especificaciones Pagina 43