Looks like the old router changed the IP in the SDP without updating the Content-Length*, so the SDP length was different from what the packet claimed hence the error.

*The public IP is 3 characters shorter than the internal one. The SDP is otherwise identical but both have 258 as content-length. The router was removing 6 bytes from the SDP so should have changed this to 252.

On 20 October 2013 16:30, Juan Antonio Ibañez Santorum <juanito1982@gmail.com> wrote:

New routers solved the problem. The old one seems to modify SDP. New INVITE requests seems as:

http://pastebin.com/hQFjDC2c

We can see local IPv4 ips instead the public ones. Whan I don't know is why FS didn't like previous requests. Is there any way to know why?

Regards

2013/10/18 Anthony Minessale <anthony.minessale@gmail.com>

Maybe try factory resetting the device?

On Fri, Oct 18, 2013 at 6:24 AM, Juan Antonio Ibañez Santorum <juanito1982@gmail.com> wrote:

Hello,

I am getting "Bad request" answer from FS but I don't know why. I have phone as that (AT810) in other locations without problems. You can see one INVITE and answer here

http://pastebin.com/Widd5j2i

Do you know why FS doesn't like it?
Regards

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