Ok, what about my specific use case where both endpoints ATA (Linksys spa3102) do have internal jitterbuffer. Should i still set the global variables as you suggested to improve the call quality over vpn? 

On 15 February 2016 at 18:23, Anthony Minessale <anthony.minessale@gmail.com> wrote:
If one or the other end of the call does not have its own JB then putting it on both sides can fix the stream for the other end.
That is why its not defaulted to being possible but you asked how to do it.


On Mon, Feb 15, 2016 at 5:54 PM, Rajil Saraswat <rajil.s@gmail.com> wrote:

The wiki page (https://wiki.freeswitch.org/wiki/Jitterbuffer) says, 
If both sides of a bridge are RTP and both sides have a jb, its fairly
useless.  In fact if anything, it can worsen call quality.

So if I set jitterbuffer on both of my FS instances as global variables, wont that be against what the wiki says?

On 15 February 2016 at 17:10, Anthony Minessale <anthony.minessale@gmail.com> wrote:
The variable must be set on the leg before the channel engages media.
you can test if its on with 

uuid_jitterbuffer <uuid> debug:10


if you want it on both legs set the following global vars in vars.xml

rtp_jitter_buffer_during_bridge=true

jitterbuffer_msec=60






On Mon, Feb 15, 2016 at 4:44 PM, Rajil Saraswat <rajil.s@gmail.com> wrote:
Hello,

I have two FS instances connected to each other over VPN. The VPN
sometimes has poor connectivity and I was wondering whether
jitterbuffer can help to improve the call quality. I am using the OPUS
codec between the FS instances since it is supposed to behave better
in lower bandwidth. The ATA on both ends are Linksys SPA3102.

My connections is as follows:

ATA_A---->FS_A---->vpn---->FS_B---->ATA_B


When user A is calling to B where should i specify jitter buffer
amongst the following:

1. The bridge between Freeswitch instance FS_A and FS_B
<action application="bridge"
data="{jitterbuffer_msec=60}sofia/gateway/$1@FS_B_IP"/>

2. The bridge between Freeswitch instance FS_B and ATA_B
<action application="bridge"
data="{jitterbuffer_msec=60}sofia/internal/$1@ATA_B_IP"/>

Thanks,
Rajil

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