If the B leg hangs you, it doesn't matter how long you try to delay the ACK ... from provider point of view, it got hanged when they saw the BYE from B leg.

If your FS is the one that is going to hang, obviously, you could delay your BYE

2017-10-07 20:56 GMT+01:00 Ken Rice <krice@freeswitch.org>:
no you cant just delay the bye message to avoid short call duration penalties. it doesnt work that way.

Sent from my iPhone

On Oct 6, 2017, at 23:40, Alexander Perkins <alexanderhenryperkins@gmail.com> wrote:

Hi.  I have what appears to be an unusual request.  

One of my clients has a clause in his contract with the local telco/sip provider that requires the majority of calls to be at or greater than 12 seconds.  On a former platform, he has an option called 'Delayed Bye Message.'  This option, if checked, allows him to specify how many seconds to delay hanging up the call once leg B initiates the request.  So, all calls will last at least 12 seconds.  Does anyone know how to do that with Freeswitch?  Any help is greatly appreciated.

Thank you,
Alex Perkins

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