Cisco 6800 Series, Руководство администратора

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The buttons flash amber and then green in sequence during the various stages of bootup as the phone checks
the hardware.
If the phone completes these stages successfully, it has started up properly.
Configure the Voice Codecs
A codec resource is considered allocated if it has been included in the SDP codec list of an active call, even
though it eventually might not be chosen for the connection. Negotiation of the optimal voice codec sometimes
depends on the ability of the Cisco IP Phone to match a codec name with the far-end device or gateway codec
name. The phone allows the network administrator to individually name the various codecs that are supported
such that the correct codec successfully negotiates with the far-end equipment.
The Cisco IP Phone supports voice codec priority. You can select up to three preferred codecs. The administrator
can select the low-bit-rate codec that is used for each line. G.711a and G.711u are always enabled.
Before you begin
Access the phone administration web page. See Access the Phone Web Page, on page 92 .
Procedure
Step 1 Select
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.
Before you begin
Access the phone administration web page. See Access the Phone Web Page, on page 92 .
Procedure
Step 1
Select Voice > System .
Step 2 In the
Optional Network Configuration
section, set up the fields as described in Optional Network
Configuration, on page 225 .
Cisco IP Phone 6800 Series Multiplatform Phones Administration Guide
57
Phone Installation
Configure the Voice Codecs