Disable Fax Relay Feature; Using Fax Mode; Configuring The Cisco Ata For Fax Mode - Cisco ATA186-I1 Administrator's Manual

Using FAX Mode

Disable Fax Relay Feature

Fax relay may be enabled by default for some IOS gateways. If you do not disable the fax relay feature,
it may override the precedence of fax/modem pass-through and cause the fax transmission to fail. It is
necessary to disable fax relay at the dial-peer or system level with the following command:
fax rate disable
Using FAX Mode
Use fax mode when the gateways in the network do not support fax pass-through mode or dial-peer
configuration.
You can set one or both lines of the Cisco ATA to G.711-only fax mode. This mode allows the fax
machine connected to the Cisco ATA to communicate directly with the far endpoint with no fax signaling
event occurring between the two gateways.
This section contains the following topics:
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Configuring the Cisco ATA for Fax Mode

G.711-only fax mode operation requires configuration of one parameter—AudioMode.
Description
The AudioMode parameter is a 32-bit value. The lower 16 bits apply to the Phone 1 port of the
Cisco ATA, and the upper 16 bits to the Phone 2 port. The following is an example of the Phone 1 port
of the Cisco ATA configured for G.711-only fax mode:
Example
0xXXXX0012
Translation
This setting translates to the bitmap:
xxxx xxxx xxxx xxxx 0000 0000 0001 0010
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Note The values
To configure the same value for the Phone 2 port of the Cisco ATA, the value would be
configuration of one port is independent from the configuration of the other port.
Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator's Guide for SCCP (version 3.0)
6-6
Configuring the Cisco ATA for Fax Mode, page 6-6
Configuring the Cisco IOS Gateway for Fax Mode, page 6-7
Bit 0 = 0—Disables G.711 silence suppression (VAD).
Bit 1 = 1—Uses G.711 only, does not user the low bit-rate codec.
Bit 2 = 0—Disables Fax CED tone detection.
Bit 4 = 1, Bit 5 = 0—DTMF transmission method: out-of-band through negotiation
Bit 6 = Bit 7 = 0—Hook flash transmission method: disables sending out hook flash
in the example do not apply to the Phone 1 port of the Cisco ATA.
XXXX
Chapter 6 Configuring and Debugging Fax Services
. The
0x0012XXXX
OL-4652-01