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P/N 480-0059-00-00
Chapter 1: Overview
What is the Tenor AS?
The Tenor AS is a VoIP (Voice over Internet Protocol) H.323/SIP switch that digitizes voice, fax, and
modem data and transmits it over the IP network. Designed as a SOHO product, the Tenor AS gives
small to medium sized businesses with analog voice infrastructure an easy, cost-effective way to
capitalize on the power of Voice over IP (VoIP).
The Tenor AS integrates a gateway, gatekeeper, border element intelligent call routing, and supports
H.32/SIP and QoS all in one solution. The gateway converts circuit switched calls to VoIP calls, the
gatekeeper performs IP call routing functions, and the border element distributes the call routing
directories throughout the network. Through the FXS port, you can connect a telephone, key system
or PBX; through the FXO port, you can connect to the PSTN (through direct connection to the Cen-
tral Office).
Figure 1-1
Tenor AS
VoIP Switch
The Tenor AS is available in two configuration types:
•
ASG VoIP Gateway. The ASG VoIP Gateway is mainly intended for applications interfacing
between the PBX and the VoIP network. The number of VoIP channels equals the number of
FXS ports. Calls can be routed in any direction between any of the ports.
•
ASM Multipath Switch. The AXM MultiPath Switch is mainly intended for symmetrical mul-
tipath applications, with an equal number of FXO and FXS ports.The number of VoIP channels
is equal to half the number of telephony (i.e. PSTN) channels.
With its MultiPath architecture, the Tenor AS can intelligently route calls between the FXS,
FXO, and the VoIP network to achieve the best combination of cost and quality. The Tenor AS
also routes calls over IP to reduce costs, and then transparently “hops off” to the PSTN, to
reach off-net locations. Calls can be routed in any direction between any of the ports.
Table 1-1 Tenor AS Configuration Types
Series
Configuration
FXS Ports
FXO Ports
VoIP Ports
ASM MultiPath
ASM200
2
2
2
ASM400
4
4
4
ASG VoIP Gateways
ASG200
2
0
2
ASG400
4
0
4
Summary of Contents for Tenor AS
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