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Chapter 7
Configuring and Debugging Fax Services
Configuring the Cisco ATA for Fax Mode on a Per-Call Basis
The per-call-basis fax mode feature is only available for the H.323 and SIP protocols.
Note
If you want to activate fax mode on a per-call basis, configure the following parameters:
Procedure
Step 1
CallFeatures and PaidFeatures Bit 15 (for line1—mask 0x8000) and Bit 31 (for line2—mask
0x80000000) = 1: This sets the default to enable fax mode on a per-call basis.
Step 2
AudioMode Bit 2 = 0: This disables fax CED tone detection.
Step 3
CallCmd includes *99;xA (99 is the default; the value can be changed to any prefix code.)
To activate a call from your fax machine, enter *99 (default), then enter the telephone number to which
you want to send the fax. The next call will automatically revert to normal mode.
Configuring the Cisco IOS Gateway for Fax Mode
On the Cisco gateway, disable both fax relay and fax pass-through at the dial-peer level or system level
with the following commands:
Procedure
Run the command:
Step 1
fax rate disable
Run the command:
Step 2
no modem passthrough
Debugging the Cisco ATA 186/188 Fax Services
This section includes the following debugging topics for fax services:
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Common Problems When Using IOS Gateways
Table 7-1
Cisco ATA is using fax over a Cisco IOS gateway.
OL-4804-01
Common Problems When Using IOS Gateways, page 7-7
Using prserv for Diagnosing Fax Problems, page 7-9
Using rtpcatch for Diagnosing Fax Problems, page 7-12
lists typical problems and actions that might solve these problems for situations in which the
Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator's Guide for H.323 (version 3.0)
Debugging the Cisco ATA 186/188 Fax Services
7-7
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