Voice Vlan Overview; Chapter 1 Voice Vlan Configuration; How An Ip Phone Works - H3C S5600 Series Operation Manual

Operation Manual – Voice VLAN
H3C S5600 Series Ethernet Switches

Chapter 1 Voice VLAN Configuration

When configuring voice VLAN, go to these sections for information you are interested
in:

Voice VLAN Overview

Voice VLAN Configuration
Displaying and Maintaining Voice VLAN
Voice VLAN Configuration Example
1.1 Voice VLAN Overview
Voice VLANs are VLANs configured specially for voice traffic. By adding the ports
connected with voice devices to voice VLANs, you can have voice traffic transmitted
within voice VLANs and perform QoS-related configuration for voice traffic as required,
thus ensuring the transmission priority of voice traffic and voice quality.

1.1.1 How an IP Phone Works

IP phones can convert analog voice signals into digital signals to enable them to be
transmitted in IP-based networks. Used in conjunction with other voice devices, IP
phones can offer large-capacity and low-cost voice communication solutions. As
network devices, IP phones need IP addresses to operate properly in a network. An IP
phone can acquire an IP address automatically or through manual configuration. The
following part describes how an IP phone acquires an IP address automatically.
Note:
The following part only describes the common way for an IP phone to acquire an IP
address. The detailed process may vary by manufacture. Refer to the corresponding
user manual for the detailed information.
When an IP phone applies for an IP address from a DHCP server, the IP phone can
also apply for the following extensive information from the DHCP server through the
Option184 field:
IP address of the network call processor (NCP)
IP address of the secondary NCP server
Voice VLAN configuration
Failover call routing
Chapter 1 Voice VLAN Configuration
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