Cisco Systems ATA 188 Manual De Usuario

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Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide (H.323)

OL-4008-01

Chapter 1 Cisco Analog Telephone Adaptor Overview

Installation and Configuration Overview

Fax Services

The Cisco ATA supports two modes of fax services, in which fax signals are transmitted using the G.711
codec:

•

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.

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

Chapter 7, “Configuring and Debugging Fax

Services”

Note

Success of fax transmission depends on network conditions and fax modem response to these conditions.
The network must have reasonably low network jitter, network delay, and packet loss rate.

Supplementary Services

H.323 supplementary services are services that you can use to enhance your telephone service. For
information on how to enable and subscribe to these services, see the

“CallFeatures” section on

page 5-24

and the

“PaidFeatures” section on page 5-25

For information on how to use these services, see

Appendix A, “Using H.323 Supplementary Services.”

The following list contains the H.323 supplementary services that the Cisco ATA supports:

•

Caller ID

•

Calling line ID presentation/rejection (CLIP/CLIR)

•