Cisco 6851 Administration Guide

Procedure
Step 1 Select Voice > System.
Step 2 In the VLAN Settings section, configure the fields.
Step 3 Click Submit All Changes.
Set Up DHCP VLAN Option from Phone Web Page
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You can add a predefined DHCP option to configure the voice VLAN for your phone.
Before you begin
• Access the phone administration web page. See Access the Phone Web Page, on page 92.
• Disable CDP/LLDP and manual VLAN.
Procedure
Step 1 Select Voice > System.
Step 2 In the VLAN Settings section, enter a value in the DHCP VLAN Option field.
The field is empty, by default.
Valid values are:
• Null
• 128 to 149
• 151 to 158
• 161 to 254
Set the DHCP VLAN Option value to Null to disable the voice VLAN configuration.
Cisco recommends that you use DHCP Option 132.
Step 3 Click Submit All Changes.
What to do next
In the VLAN Settings section of the Voice > System tab, you can configure these settings:
• Cisco Discovery Protocol (CDP)
• LLDP-MED
• Network Startup Delay
Cisco IP Phone 6800 Series Multiplatform Phones Administration Guide
65
Phone Installation
Set Up DHCP VLAN Option from Phone Web Page

Cisco 6851 Specifications

General

Network Protocols	SIP
Speakerphone	Yes
Bluetooth	No
Wi-Fi	No
USB Port	No
Display	3.5 inch grayscale display (396 x 162 pixels)
Ethernet	10/100 Ethernet
PoE	IEEE 802.3af
Audio	Wideband audio
Line Keys	4
Headset Port	RJ9
Supported Codecs	G.711, G.722, G.729, iLBC
Weight	0.9 kg