Sorry no personal experience :( was just trying to help you understand they may be two separate causes if you didn't already know.

For example, muting a phone will probably (unless specifically configured on the device not to) send SOME RTP/media data. It will just be audibly silent.

As opposed to hold, in which you adjust SDP data (as your friend said) to indicate what's going on (eg. A will send to B but B will not send back or vice versa..). When FS receives a re-invite with adjust SDP it should respond with a 200OK to indicate that it's all fine.

So I'd run a trace and check FS is sending a 200OK back.

in summary: Something on SFB is timing out here. You need to find out what that is (SFB logs?) 



On Thu, May 5, 2016 at 1:34 PM, jay binks <jaybinks@gmail.com> wrote:

I've seen similar things in both scenarios ( hold  & mute ) but don't recall the specifics of each scenario.  I can potentially gather more info tomorrow.

Have you experienced the same things that I'm seeing ? ( have you found fixes ? )

Jay

On May 5, 2016 9:37 PM, "Benjamin Cropley" <benjamin.cropley@gmail.com> wrote:
Hi Jay,

Can you clarify whether this issue only happens when you push mute on a SFB device or only when pushing the 'hold' key? Or both? (both are treated slightly differently in SIP).

Ben


On Thu, May 5, 2016 at 11:56 AM, jay binks <jaybinks@gmail.com> wrote:
Hi All,

Im hoping that the collective experience of the FS Community might be able to help with some interop fun with Skype For Business, specifically where the SFB end sends a bye at around 3 min, after the call has been on hold for  ( for most of that time ) 

I dont see anything obvious in the signalling, but a colleague who is quite experienced with Lync feels it may be related to how we are handling "a=inactive" when the call is on hold.

I cant at this point share any of these SIP traces ( mainly because im yet to have this entire scenario tested in our lab ).  

I guess what Im asking is, does anyone have SFB working well with Freeswitch, and have you tested long periods of silence ( pressing mute in the SFB client ) and long periods of the call on hold.

if so, can you potentially share any settings you had to tweak in order to make this work.

Sincerely

Jay



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