Quintum Technologies Tenor Call Relay SP - Manual (Page 11)

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Chapter 1: Overview
What is Tenor
®
Call Relay SP?
The Call Relay SP is a stand-alone unit which acts as an inter-domain VoIP portal used to directly connect
(over IP) one or more VoIP networks, supporting up to 720 simultaneous calls between networks. Call Relay
SP provides a single point for call control management, administrative services, call accounting, and security.
The unit connects with the IP network via 10/100 Mbps Ethernet connection; calls are transmitted through the
Ethernet LAN and routed over the corporate WAN or internet. It routes the call according to the parameters or
defaults you have configured in the routing database.
Call Relay SP features NATAccess, an intelligent network address translation technology. This enables a VoIP
network with multiple H.323 endpoints to operate between firewalls equipped with Network Access Transla-
tion (NAT). NATAccess solves the problems commonly experienced when using H.323 devices behind fire-
walls. It eliminates the need to place these endpoints in the “DMZ” or public IP domain, or to open the
firewall to the point where serious security concerns are raised.
Figure 1-1 Call Relay SP
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