
Contents
viii
Cisco IP Telephony Network Design Guide
78-11103-03
CHAPTER
7 Multisite WAN with Centralized Call Processing 7-1
Centralized Call Processing Model 7-1
Call Admission Control 7-3
Caveats for Locations-Based Call Admission Control 7-4
Dial Plan Considerations 7-5
Interlocation Calls 7-5
Intercluster Calls 7-6
Local PSTN Calls 7-6
Design Example 7-6
Cisco CallManager Cluster Considerations 7-8
DSP Resource Provisioning for Transcoding and Conferencing 7-10
Voice Messaging Considerations 7-12
CHAPTER
8 Quality of Service 8-1
Campus QoS Model 8-1
Traffic Classification 8-2
Interface Queuing 8-2
WAN QoS Model 8-4
WAN Provisioning 8-4
WAN QoS Tools 8-5
Traffic Prioritization 8-5
Link Efficiency Techniques 8-7
Traffic Shaping 8-9
Best Practices 8-10
Call Admission Control 8-11
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