[Freeswitch-users] Lost ACKs and BYE (ack timeout)

Flavio Goncalves flavio at voffice.com.br
Sat Oct 24 09:15:58 UTC 2020

ACKs are sent to what you have in Contact and Record-Route Headers of the
200OK. Check if your Contact is not pointing somewhere else.

Flavio E. Goncalves

Em sáb., 24 de out. de 2020 às 05:52, Martyn Davies <martyn at magiccow.co.uk>

> I have Freeswitch running in an Alpine VM with a Sangoma gateway
> downstream.  Until recently I was using Freeswitch 16 and it was working
> fine, but due to an OS upgrade, it seemed reasonable to upgrade to
> Freeswitch 18 (the version that comes with that Alpine release). However,
> now upstream calls from the Sangoma fail.  Specifically, when FS sends the
> 200 OK (for the Invite), the Sangoma now does not reply with ACK, and so FS
> tears down the call after 30 sec.
> I tried the 'connectile dysfunction' parameter, but this did not seem to
> have any positive effect.  In fact, it was perhaps worse because the
> Register (from Sangoma to FS) seems to get stuck in a loop, with Sangoma
> sending the request over and over back to back.
> I would be interested to hear if this rings a bell with anyone?  Are there
> any crucial differences in base config between 16 and 18 that would change
> the behaviour?
> Regards,
> Martyn
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