Fax Troubleshooting - Cisco SPA2102 Administration Manual

Analog telephone adapters
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Configuring Voice Services
Using a FAX Machine
STEP 5
STEP 6
STEP 1
STEP 2
STEP 3
STEP 4
Cisco Small Business ATA Administration Guide
For example:
Enable T.38 fax on the SPA 2102 by configuring the following parameter on the
Line tab for the FXS port to which the FAX machine is connected:
If a T.38 call cannot be set-up, then the call should automatically revert to
NOTE
G.711 fallback.
If you are using a Cisco media gateway use the following settings:
Make sure the Cisco gateway is correctly configured for T.38 with the SPA dial
peer. For example:

Fax Troubleshooting

If have problems sending or receiving faxes, complete the following steps:
Verify that your fax machine is set to a speed between 7200 and 14400.
Send a test fax in a controlled environment between two ATAs.
Determine the success rate.
Monitor the network and record the following statistics:
Jitter
Loss
Delay
4
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