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Chapter 6 Multisite WAN with Distributed Call Processing
Dial Plan Considerations
Figure 6-16 illustrates the use of regions for distributed call processing
environments, where often only two regions need be assigned.
Note Just one WAN region is associated with all H.323 devices across the
IP WAN because of the single codec restriction. In future releases of
Cisco CallManager, multiple WAN regions may be supported.
Figure 6-16 Use of Regions for Distributed Call Processing
Site B
IP WAN
Region matrix
Site A to Site A
Site A to IP WAN-G729
Codec
G711
G729
Devices
All users at site A
H.323 device for site B CM
H.323 device for site C CM
Region
Site A
IPWAN-G729
IPWAN-G729
V
IP
IP
IP
Site A
Site C
40808
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