Chapter 1 Cisco Analog Telephone Adaptor Overview

Software Features

Additional Supported Signaling Protocols

In addition to SIP, the Cisco ATA supports the following signaling protocols:

H.323

Skinny Client Control Protocol (SCCP)

Media Gateway Control Protocol (MGCP)

SIP and H.323 share the same software image. SCCP and MGCP also share a software image, which is separate from the SIP/H.323 image. If you wish to perform a cross-protocol upgrade from SIP to another signaling image, see the “Upgrading the Signaling Image from a TFTP Server” section on page 8-1.

Other Supported Protocols

Other protocols that the Cisco ATA supports include the following:

802.1Q VLAN tagging

Cisco Discovery Protocol (CDP)

Domain Name System (DNS)

Dynamic Host Configuration Protocol (DHCP)

Internet Control Message Protocol (ICMP)

Internet Protocol (IP)

Real-Time Transport Protocol (RTP)

Transmission Control Protocol (TCP)

Trivial File Transfer Protocol (TFTP)

User Datagram Protocol (UDP)

Cisco ATA SIP Services

For a list of required SIP parameters as well as descriptions of all supported Cisco ATA SIP services and cross references to the parameters for configuring these services, see Chapter 4, “Basic and Additional SIP Services.”

These services include the following features:

IP address assignment—DHCP-provided or statically configured

Cisco ATA configuration by means of a TFTP server, web browser, or voice configuration menu.

VLAN configuration

Cisco Discovery Protocol (CDP)

Low-bit-rate codec selection

User authentication

Configurable tones (dial tone, busy tone, alert tone, reorder tone, call waiting tone)

Dial plans

Network Address Translation (NAT) Gateway

NAT/Port Address Translation (PAT) translation

Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide (SIP)

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Cisco Systems ATA186I2ARF Additional Supported Signaling Protocols, Other Supported Protocols, Cisco ATA SIP Services