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Cisco Small Business ATA Administration Guide 10
Introducing Cisco Small Business Analog
Telephone Adapters
This guide describes the administration and use of Cisco Small Business analog
telephone adapters (ATAs). These ATA devices are a key element in the end-to-
end IP Telephony solution. An ATA device provides user access to Internet phone
services through one or more standard telephone RJ-11 phone ports using
standard analog telephone equipment. The ATA device connects to a wide area IP
network, such as the Internet, through a broadband (DSL or cable) modem or
router. The ATA can be used with an onsite call-control system such as the
SPA9000 Voice System or legacy PBX, or with an Internet-based call-control
system.
Figure 1 ATA Deployment without Onsite Call Control
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