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Chapter 1
Cisco Analog Telephone Adaptor Overview
Software Features
The Cisco ATA supports the following protocols, services and methods:
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Voice Codecs Supported
The Cisco ATA supports the following voice codecs (check your other network devices for the codecs
they support):
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Additional Supported Signaling Protocols
In addition to H.323, the Cisco ATA supports the following signaling protocols:
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If you wish to perform a cross-protocol upgrade from H.323 to another signaling image, see the
"Upgrading the Signaling Image from a TFTP Server" section on page
Other Supported Protocols
Other protocols that the Cisco ATA supports include the following:
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OL-4804-01
Voice Codecs Supported, page 1-7
Additional Supported Signaling Protocols, page 1-7
Other Supported Protocols, page 1-7
Cisco ATA H.323 Services, page 1-8
Fax Services, page 1-9
Supplementary Services, page 1-9
G.711µ-law
G.711A-law
G.723.1
G.729
G.729A
G.729B
G.729AB
Session Initiation Protocol (SIP)
Skinny Client Control Protocol (SCCP)
Media Gateway Control Protocol (MGCP)
802.1Q VLAN tagging
Cisco Discovery Protocol (CDP)
Domain Name System (DNS)
Dynamic Host Configuration Protocol (DHCP)
Internet Control Message Protocol (ICMP)
Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator's Guide for H.323 (version 3.0)
Software Features
8-1.
1-7
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