
Chapter 1 Introduction
Multisite IP WAN with Distributed Call Processing
1-8
Cisco IP Telephony Network Design Guide
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Figure 1-4 Multisite Model with Distributed Call Processing
Cisco IOS gatekeeper
for admission control
V
IP
IP
IP
V
IP
IP
IP
V
IP
IP
IP
V
IP
IP
IP
40766
Site A
Site C
Site B
PSTN
(Secondary
voice path)
IP WAN
Primary
voice path)
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