
4 Contents
Enterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02
Components of delay 31
Reduce link delay 32
Reducing hop count 32
Routing issues 34
Implementing QoS in IP networks 34
Traffic mix 35
TCP traffic behavior 35
Enterprise Edge Router QoS Support 35
Implementing the network 36
LAN engineering 36
Setting the Quality of Service threshold for fallback routing 36
IP telephony settings 37
Codec types 37
Silence compression 38
Echo cancellation 40
Jitter buffer 40
Fax calls 41
Fallback threshold 42
Dialing plan 43
IP telephony and M1 networking 43
Enterprise Edge and a Gatekeeper 46
Toll bypass with VoIP telephony 47
Core telephony services configuration 52
Post-installation network measurements 52
Setting IP telephony QoS objectives 53
Intranet QoS monitoring 53
User feedback 54
Chapter 3 Engineering checklist 55
Chapter 4 Installation 57
Installation flowchart 57
Configuring a local gateway 57
Configuring a remote gateway 58
Chapter 5 Configuration 61
User Interface Overview 62
Local Gateway Configuration 63
Remote Gateway Configuration 65
Core telephony services configuration 67
Configuration of fallback to conventional circuit-switched facilities 67
Chapter 6 Maintenance 69
Quality of Service Monitor 69
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