[Freeswitch-users] Bypass media succeeds from extension to gateway but fails from extension to extension

Ken Rice krice at freeswitch.org
Tue May 8 11:38:48 MSD 2012

This is not a bug in FreeSWITCH...
Bypass Media is a special mode to allow us to act as a psuedo proxy.

Other then possibly filtering some codecs the rest of the SDPs are simply
copied across the bridge. That means if your sip devices are sending RFC1918
IPs in their SDPs then FreeSWITCH will forward an RFC1918 SDP. Why is that?
Because FreeSWITCH has no way to know where the media is actually coming
from since FreeSWITCH is not in the media path.


On 5/7/12 8:34 PM, "Gabriel Gunderson" <gabe at gundy.org> wrote:

> On Mon, May 7, 2012 at 9:54 AM, Phil Quesinberry
> <philq at qsystemsengineering.com> wrote:
>> I¹m trying to get bypass media to work with extension to extension calls.
>> Both endpoint extensions are behind NAT in two different locations.  This
>> looks like a possible bug because FS sends the internal IP address of one of
>> the endpoints to the other for media, but when making a call from the same
>> extension to an external gateway for PSTN termination, it sends the phone¹s
>> external IP address as it should, and the call succeeds.
> My guess is that this is not a bug. The NAT stuff has been gone over
> and over and used in many different configurations. Usually, in my
> experience, NAT issues are cause by config errors or a broken device.
> What do you have for your sofia configs?
> Gabe
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