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Cisco IP Telephony Network Design Guide
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Contents
Configuring Dial Plan Groups and Calling Restrictions 5-14
Partitions 5-15
Calling Search Space 5-15
Dial Plan Guidelines and Configuration 5-18
Campus and Individual Site Dial Plans 5-19
Multi-Site WAN Dial Plans 5-21
The Role of a Gatekeeper 5-21
CHAPTER
6 Multisite WAN with Distributed Call Processing 6-1
Distributed Call Processing Model 6-1
Call Admission Control 6-3
Operational Model 6-8
Gatekeeper Configuration 6-9
Cisco CallManager Configuration 6-10
Interaction Between Cisco CallManager and Gatekeeper 6-11
Considerations for Using a Gatekeeper 6-15
Dial Plan Considerations 6-15
Using Cisco CallManager to Route Calls 6-17
Using the Gatekeeper to Route Calls 6-19
Cisco CallManager Configuration 6-22
Gatekeeper Configuration 6-27
Gatekeeper Selection and Redundancy 6-28
Configuring Dialing Restrictions 6-28
Bandwidth Consumption of Dialed Numbers 6-28
Cisco CallManager Cluster Considerations 6-30
DSP Resource Provisioning for Transcoding and Conferencing 6-30
Voice Messaging Considerations 6-32
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