Mike dial test done, call connect but end point can not heard when local point crystal clear.
Find out NAT config can produce this.
My config is:
ATA 126.96.36.199 at private -FIREWALL – TENOR 192.168.1.248 at public
I assign dedicated public 192.168.1.249 to 188.8.131.52 to the ATA using routing for both at Tenor, still getting the not listening issue.