
Chapter 6 Multisite WAN with Distributed Call Processing
Distributed Call Processing Model
6-2
Cisco IP Telephony Network Design Guide
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Figure 6-1 Multisite WAN with Distributed Call Processing Model
In Cisco CallManager Release 3.0(1), the initial distributed call processing model
can support up to 10 sites networked across the IP WAN. In Cisco CallManager
Release 3.0(5), support for distributed call processing is expanded to 100 sites.
Voice/e-mail
Directory Voice/e-mail
Headquarters
IP WAN
primary
voice path
PSTN
Gatekeeper(s)
Conf
MTP
Conf
MTP
Conf
MTP
Branch
Offices
V
IP
IP
IP
V
IP
IP
IP
40802
Directory
V
IP
IP
IP
Directory Voice/e-mail
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