CHAPTER
1-1
Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide (H.323)
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1
Cisco Analog Telephone Adaptor Overview
This section describes the hardware and software features of the Cisco Analog Telephone Adaptor
(Cisco ATA) and includes a brief overview of the H.323 protocol.
The CiscoATA analog telephone adaptors are handset-to-Ethernet adaptors that allow regular analog
telephones to operate on IP-based telephony networks. Cisco ATAs support two voice ports, each with
an independent telephone number. The Cisco ATA 188 also has an RJ-45 10/100BASE-T data port.
This section covers the following topics:
•H.323 Overview, page 1-2
•Hardware Overview, page 1-5
•Software Features, page 1-7
•Installation and Configuration Overview, page 1-9
Figure1-1 CiscoATA Analog Telephone Adaptor
The Cisco ATA, which operates with Cisco voice-packet gateways, makes use of broadband pipes that
are deployed through a digital subscriber line (DSL), fixed wireless-cable modem, and other Ethe rnet
connections.
Note The term Cisco ATA refers to both the CiscoATA 186 and the Cisco ATA188, unless otherwise stated.
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ANALOG TELEPHONE ADAPTOR
CISCO ATA 186