Fax Services; Pre-Call And Mid-Call Services; Pre-Call Services - Cisco ATA 188 Administrator's Manual

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.

Pre-call and Mid-call Services

This section provides an overview of telephone services that the Cisco ATA allows the user to perform
either before or during a call. For end-user procedures on how to use these services, see
"How to Use Pre-call and Mid-call Services."
This section contains the following topics:
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Note The services listed in this section are supported by Cisco CallManager. For Cisco IOS Telephony Service
(ITS)-supported services, refer to ITS documentation.

Pre-call Services

Table 1-1
includes references to where the user procedure is described for each service.
OL-3141-01
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
UDP Type of Service (ToS) configuration
802.1P Class of Service (Cos) Bit configuration
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.
Pre-call Services, page 1-7
Mid-call Services, page 1-8
lists the pre-call services that the Cisco ATA supports for the SCCP protocol.
Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator's Guide (SCCP)
Chapter 6, "Configuring and Debugging Fax
Software Features
Appendix A,
Table 1-1 also
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