Cisco IP Phone 6851

Procedure
Step 1
To configure the voice codecs on each extension, in the phone web user interface, navigate to Admin Login
> advanced > Voice > Ext(n), where n is an extension number.
Step 2
In the Audio Configuration section, configure the parameters.
Step 3
Click Submit All Changes.
Set the Optional Network Servers
Optional network servers provide resources such as DNS lookup, network time, logging, and device discovery.
It also enables you to add PC port mirroring on the user phone. Your user can also enable or disable this
service from the phone.
Procedure
Step 1
In the phone web page, navigate to Admin Login > advanced > Voice > System.
Step 2
In the Optional Network Configuration section, set up the fields as described in Optional Network
Configuration, on page 155.
Step 3
Click Submit All Changes.
VLAN Settings
If you use a virtual LAN (VLAN), your phone voice packets are tagged with the VLAN ID.
In the VLAN Settings section of the Voice > System window, you can configure these settings:
•
Cisco Discovery Protocol (CDP)
•
LLDP-MED
•
Network Startup Delay
•
VLAN ID
Cisco Discovery Protocol
Cisco Discovery Protocol (CDP) is negotiation-based and determines which virtual LAN (VLAN) the Cisco
IP Phone resides in. If you are using a Cisco switch, Cisco Discovery Protocol (CDP) is available and is
enabled by default. CDP has these attributes:
•
Obtains the protocol addresses of neighboring devices and discovers the platform of those devices.
•
Shows information about the interfaces your router uses.
Cisco IP Phone 6800 Series Multiplatform Phones Administration Guide
32
Set the Optional Network Servers