No, there is only traffic in the direction SIP->PSTN. I'm not using the web interface, but instead the shell command session.py
This is what it shows ... ( for the case when I call from
PSTN-to-SIP
)
Total traffic: 20.48kbps/0bps/0bps (in1/in2/out) Session count: 1
I think you need to look into your ser.cfg; it looks to me like you are proxying calls only when they originate from NAT -> non-nat and not from non-natted endpoints -> NAT.
In some way, my gateway was modifying my packets. What I did was ...
if ( src_ip = IP_GATEWAY) { force_rport(); fix_contact(); use_media_proxy(); };
... at the INVITE, and so, that was it.
Just in case any has the same problems.
Regards,
Lucas