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Cisco Unified Communications Manager Administration Guide
OL-18611-01
Chapter 8 Region Configuration
Configuring a Region
Step 6 To configure the default codecs to use between this region and other regions, click another region name
(other than this region) to highlight it in the Regions window pane.
a. From the Audio Codec drop-down list box, choose a default audio codec value to use between this
region and the region that you highlighted.
The audio codec determines the type of compression and the maximum amount of bandwidth that is
allocated for these calls. See
Table 8-2 for a summary of the available codec types and bandwidth
usage.
b. In the Video Call Bandwidth column, click the appropriate radio button to configure the default
value to specify the video bandwidth to use for video calls between this region and the region that
you highlighted.
If you specify None, the system does not allow video calls between this region and the specified
region.
c. From the Link Loss Type drop-down list box, choose a default link loss type to use between this
region and the region that you highlighted.
Note For enhanced scalability, Cisco recommends that you properly set the default values in the
Clusterwide Parameters (System - Location and Region) section of the Cisco Unified
Communications Manager Administration Service Parameters Configuration window for the
audio codec, video call bandwidth, and link loss type values and then choose the Use System
Default entries in the Cisco Unified Communications Manager Administration Region
Configuration window for these fields.
Step 7 To save the new region in the database, click the Save icon that displays in the tool bar in the upper, left
corner of the window (or click the Save button that displays at the bottom of the window).
Tip The Region Configuration window displays an Items per page drop-down list box that allows you to list
25, 50, 100, 150, 200, or 250 configured regions. If you choose to display 100 or more regions, Cisco
Unified Communications Manager may experience performance degradation.
Next Step
After adding a new region to the database, you can use it to configure device pools. Devices acquire a
region setting from the device pool to which they are assigned. See the
“Configuring a Device Pool”
section on page 9-11 for information on configuring device pools.
Additional Information
See the “Related Topics” section on page 8-10.
The total bandwidth that is used per call stream depends on the audio codec type as well as factors such
as data packet size and overhead (packet header size). The bandwidth figures shown in
Table 8-2 apply
for 30-ms data packets and include IP headers. Each call comprises two call streams.
Note The codecs that Table 8-2 specifies correlate to an approximate bandwidth usage per call. For
information on bandwidth usage for each codec, refer to Cisco Unified Communications Solution
Reference Network Design (SRND) for the current release of Cisco Unified Communications Manager.