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Intermittent ACK Not Received

Discussion in '3CX Phone System - General' started by derekvw, Mar 22, 2017.

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  1. derekvw

    Jan 9, 2017
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    We recently switched out our router to a Fortigate 90E. Ever since then, we've been experiencing intermittent ACK not received issues. I can have 10 calls come in fine and then one drop after 32 seconds and then the next 10 work just fine.

    The Fortigate is configured to have a public DNS server as primary and our internal Windows Server DNS as secondary.

    When I run wireshark across the interface, I do notice a few TCP retransmission requests.

    Any ideas on how I can figure this out?

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