Edgewater Networks 4300T Bedienungsanleitung PDF herunterladen

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EAN0105-01

Contents

• Introduction

• Key benefits and features of VoIP survivability

• Example network topologies

o Enterprise

o Service Provider

• How survivability works

o Fallback mode and local call switching

o Support for redundant call processing servers (IP PBX or Softswitch)

• Platform support

• Configuring VoIP survivability in EdgeMarc appliances

Introduction

The high availability of voice services is a fundamental requirement for enterprises deploying their

own IP telephony equipment or subscribing to hosted VoIP services. In both cases providing

reliable communications to remote branch offices is costly usually involving the installation of local

call processing servers or additional wide area network (WAN) links to these locations.

Edgewater’s VoIP survivability enhances the reliability of VoIP services to branch offices in a cost

effective manner by providing local call switching in the event of WAN link failures or a loss of

connectivity to network based call processing servers. VoIP survivability is an orderable software

option for Edgewater’s EdgeMarc Series appliances. EdgeMarc appliances are flexible networking

devices that can also be configured to provide IP routing, optional T1 WAN link termination, resolve

NAT/firewall traversal problems, ensure high quality voice using QoS, monitor voice call quality and

provide comprehensive security for the LAN using a VoIP and data firewall.

Key benefits and features of VoIP survivability

Edgewater’s VoIP survivability offers the following important benefits:

• Continuity of voice services to branch offices during WAN link failures or failures in network

based call processing servers

• Significant savings over alternative solutions requiring redundant call processing servers or

multiple WAN links

• Simplified design that is easier to manage than alternative solutions requiring maintenance

of multiple dial plans in distributed call processing servers and complex routing

Survivability features:

• Application layer based monitoring of call processing servers to determine connectivity

• Automatic detection of loss of connectivity to call processing servers caused by WAN link

failures, network congestion or call processing server software failure

• Automatic return of call control to network based call processing servers once connectivity

has been restored

• Configurable timers to determine call processing server connectivity

• Call processing server connectivity status indicators

• Support for multiple call processing servers using DNS

Application Note

Configuring VoIP Survivability

In EdgeMarc Appliances

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Inhaltsverzeichnis

Seite 1 - Application Note

Page 1 of 6EAN0105-01Contents• Introduction• Key benefits and features of VoIP survivability• Example network topologieso Enterpriseo Service Pro

Seite 2 - Example network topologies

Page 2 of 6EAN0105-01• Reporting of the currently active call processing server in environments using multiple callprocessing servers• Local call sw

Seite 3 - Platform support

Page 3 of 6EAN0105-01How survivability worksThe EdgeMarc appliance automatically creates a local dialing plan by monitoring the registrationrequests s

Seite 4 - EAN0105-01

Page 4 of 6EAN0105-01Configuring VoIP survivability in EdgeMarc appliancesConfiguring VoIP survivability in EdgeMarc appliances consists of the follow

Seite 5

Page 5 of 6EAN0105-01The reachability settings are used to determine when the EdgeMarc appliance provides local callswitching by entering fallback mod

Seite 6

Page 6 of 6EAN0105-01Step 4 - Configure the IP address of the local LAN side PSTN gateway (optional)This step should be used if you have installed a P

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