Configure The Voice Codecs - Cisco 8800 Series Administration Manual

Cisco IP Phone Installation
Cisco IP Phones that support video negotiate the best bandwidth and resolution based on the phone configuration
and phone screen limitations.
The next table shows the resolutions, frames per second, and video bit rate range for each of the supported
video types.
Video type
720p
720p
WVGA
WVGA
360p
360p
240p
240p
VGA
VGA
CIF
CIF
SIF
SIF
QCIF
QCIF

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
Video resolution Frames per second (fps)
1280 x 720 30
1280 x 720 15
800 x 480 30
800 x 480 15
640 x 360 30
640 x 360 15
432 x 240 30
432 x 240 15
640 x 480 30
640 x 480 15
352 x 288 30
352 x 288 15
352 x 240 30
352 x 240 15
176 x 144 30
176 x 144 15
Access the Phone Web Page, on page
Cisco IP Phone 8800 Series Multiplatform Phones Administration Guide
Configure the Voice Codecs
Video bit rate range
1360–2500 kbps
790–1359 kbps
660–789 kbps
350–399 kbps
400–659 kbps
210–349kbps
180–209kbps
64–179kbps
520–1500kbps
280–519kbps
200–279 kbps
120–199 kbps
200–279 kbps
120–199 kbps
94–119 kbps
64–93 kbps
88.
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