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Home » Kerio User Forums » Kerio Operator » Failed to receive fax dropped prematurely.

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Version 2.5.2

we have some trouble getting incoming fax messages.
A lot of incoming fax messages failed with the following error

"Failed to receive fax from '...aNumber..' for '503', because The call dropped prematurely."

Any idea

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i would recommend to deactivate T.38 protocol and only allow receiving faxes via G.711.
You will find the setting under Advanced Options -> Telephony-> SIP Configuration
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