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I have two DIDs, two ring groups, and two phone extensions in a test system. I can connect the first DID to any extension or ring group and calls always work as expected. On the second DID, calls do not get audio on either ring group but work as expected when connected directly to an...

I set rtp-start-port and rtp-end-port in my autoload_configs/switch.conf.xml and configured my firewall and router appropriately. Everything was fine on this config for a few weeks, but these past few days most calls had no audio. A packet trace showed that RTP ports were commonly outside of the...