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Chapter 1
Cisco Analog Telephone Adaptor Overview
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Fax Services

The Cisco ATA supports two modes of fax services, in which fax signals are transmitted using the G.711
codec:
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How you set Cisco ATA fax parameters depends on what network gateways are being used. You may
need to modify the default fax parameter values (see
Services").
Success of fax transmission depends on network conditions and fax modem response to these conditions.
Note
The network must have reasonably low network jitter, network delay, and packet loss rate.

Supplementary Services that the Cisco ATA Provides

Table 1-1
includes links to the corresponding parameters that allow you to configure these services.
Table 1-1
Service
Caller ID
Call Waiting
Call-Waiting-Caller ID
Three-way Conference
OL-4803-01
Configurable tone (dial tone, busy tone, confirm tone, reorder tone, call waiting tone)
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
Caller ID format
Ring cadence format
Silence suppression
Low-bit-rate codec selection
RTP media port configuration
Hook-flash detection timing configuration
Cisco Discovery Protocol (CDP)
User interface password
Type of Service (ToS) configuration for audio and signaling ethernet packets
Debugging and diagnostic tools
Fax pass-through mode—Receiver-side Called Station Identification (CED) tone detection with
automatic G.711A-law or G.711µ-law switching.
Fax mode—The Cisco ATA is configured as a G.711-only device.
lists the supplementary phone services that the Cisco ATA provides for MGCP.
Supplementary Services that Require Configuration on the Cisco ATA
Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator's Guide for MGCP (version 3.0)
Chapter 6, "Configuring and Debugging Fax
Parameter
CallerIdMethod, page 5-21
SigTimer, page 5-26
CallerIdMethod, page
5-21,
ConnectMode, page
5-24—Bit 23
Software Features
Table 1-1
SigTimer, page 5-26
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