• Echo Canc Enable—No.
• FAX Passthru Method—ReINVITE.
Step 6
Click Submit to save your settings or click Cancel to abandon the unsaved settings.
Step 7
If you are using a Cisco media gateway for PSTN termination, disable T.38 (fax relay) and enable fax using
modem passthrough.
For example:
modem passthrough nse payload-type 110 codec g711ulaw
fax rate disable
fax protocol pass-through g711ulaw
If a T.38 call cannot be set up, then the call automatically reverts to G.711 fallback.Note
Step 8
If you are using a Cisco media gateway, make sure that the Cisco gateway is correctly configured for T.38
with the dial peer.
For example:
fax protocol T38
fax rate voice
fax-relay ecm disable
fax nsf 000000
no vad
Troubleshoot Your Fax
If you have problems sending or receiving faxes, complete the following steps:
Procedure
Step 1
Verify that your fax machine is set to a speed between 7200 and 14400.
Step 2
Send a test fax in a controlled environment between two ATAs.
Step 3
Determine the success rate.
Step 4
Monitor the network and record the statistics for jitter, loss, and delay.
Step 5
If faxes fail consistently, capture a copy of the configuration. You can then send this file to Technical Support.
a) In your web browser, enter the path for the configuration file:
http://<ATA_Local_IP_Address>/admin/config.xml&xuser=
<admin_user>&xpassword=<admin_password>
b) On the File menu, choose Save As, and save the file with a filename such as MyConfiguration.xml.
Step 6
To enable logging, go to the Voice > System page, and set the IP address of your syslog or debug server. Set
the Debug Level to 3. For more information, see System, on page 36.
Cisco ATA 191 and ATA 192 Analog Telephone Adapter Administration Guide for Multiplatform Firmware
126
Advanced Options for Phone Services
Troubleshoot Your Fax
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