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Fax from ATA to ATA fails sometimes

We are experiencing fax drops when receiving faxes on a modem connected to an ATA containing high pixels. Like if we are receiving a text document it goes through, but if the text contains pictures it drops.

Any ideas?

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Re: Fax from ATA to ATA fails sometimes

The ATA fax does not work when there is a T1 line connects to Cisco IOS

Gateway and the gateway is not configured using the external T1 clock.

The problem applies to all protocols (H323, SIP, Skinny and MGCP).

Configuring and Troubleshooting the Cisco ATA 186 with Fax:

http://www.cisco.com/en/US/products/hw/gatecont/ps514/products_configuration_example09186a00800d698e.shtml

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