FXS Register to SBC Issue
Hi,
I had a 3820 SBC.
We are currently using this SBC for endpoints (IP phones) after NAT to connect to HUB site platform
We are now considering to introducing FXS IAD in client site to allow analog phones to connect HUB site
Now, We would like to connect a 24 ports FXS via NAT router to SBC via internet
FXS will use same source Port 5060 and Private IP x.x.x.x to send SIP message for ALL 24 DNs to SBC
For such case, there is an occasion, the FXS restarts and sends many REGISTER messages at the same time to SBC which exceed the UNTRUST threshold for a session.