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EAN0105-01
• Reporting of the currently active call processing server in environments using multiple call
processing servers
• Local call switching between VoIP endpoints and premises based PSTN gateways during
WAN link failures or other failures that prevent connectivity to network based call processing
servers
• Calling features such as transfer, hold and conference are provided by EdgeMarc Series
appliances
• Simplified setup that creates a local dial plan in the EdgeMarc appliance by monitoring
traffic to network based call processing servers
Example network topologies
Enterprises deploying their own IP telephony
infrastructure install EdgeMarc appliances at remote
branch offices between the WAN and LAN. A call
processing server or IP PBX is typically deployed at
the main site or headquarters location to provide call
switching for all VoIP endpoints. EdgeMarc
appliances can terminate the T1 connection at the
branch office or can be installed behind other WAN
routers or SDSL modems that terminate the WAN
link. The EdgeMarc 4200 and 4300T offer 4
integrated LAN switch ports and if greater density is
required a 3
rd
party LAN switch can be connected to
one of the LAN ports. IP phones and a PSTN
gateway can then be connected on the LAN side of
the EdgeMarc appliances.
Service providers offering IP PBX services use
EdgeMarc Series appliances as the demarcation point
at the customer premises for the hosted VoIP
service. EdgeMarc appliances are installed at SOHO,
branch office and headquarters locations and are
used to connect VoIP subscribers to the softswitch
located in the service provider’s network. IP phones
and a local PSTN gateway can be installed on the
LAN side of the EdgeMarc appliances. Call
processing for the hosted service is provided by
network based softswitches.
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