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Chapter 1: Overview
SNMP Support
The Tenor AS supports Simple Network Management Protocol (SNMP), the standard protocol used
to exchange network information between different types of networks. The Tenor AS unit acts as an
SNMP agent—using HP®
Openview™—to receive commands and issue responses to the Network
Manager. The Network Manager will then be able to perform certain functions, such as receiving
traps from the Tenor AS.
Call Detail Recording
Through the Call Detail Record (CDR) feature, the Tenor AS generates a call record at the comple-
tion of each call, typically for accounting purposes. A CDR is a string of data that contains call
information such as call date and time, call duration, calling party, and called party. Tenor AS may
store Call Detail Records locally or they can be sent to a CDR server within the network. The CDR
contains sufficient information to capture billing data, which can be used to create billing reports
using third party billing software.
IVR/RADIUS Support
Interactive Voice Response (IVR) is a feature of the Tenor AS that enables you to offer services, such
as Pre-paid calling cards and Post-paid accounts, to your customers.
The Tenor uses the RADIUS (Remote Authentication Dial-In User Service), for authenticating and
authorizing user access to the VoIP network, including ANI Authentication (Types 1 and 2). The
RADIUS is a standard protocol which provides a series of standardized message formats for trans-
mitting and receiving dialed information, account data and authorization codes between the network
access gateway and the billing server.
NATAccess™
NATAccess is an intelligent network address translation technology. It enables VoIP networks with
multiple H.323 endpoints to operate behind firewalls equipped with H.323 Network Address Trans-
lation (NAT); this provides maximum network security. NATAccess simplifies deployment by elim-
inating the need to place the Tenor on a public IP network. Using NATAccess provides easy, secure
expansion between mulitple VoIP sites. In addition, NAT technology in the Tenor permits the use of
private subnets at the same time; in-house calls will never go over the public internet.
Figure 1-3 Tenor with NATAccess Deployment
“Public” LAN
Firwall NAT
“Private” LAN
“Private” port
“DMZ” Port
“DMZ” LAN
Router
Summary of Contents for Tenor AS
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