I experienced similar inbound stream dropped within 30 seconds when I played with my SPA3102 last year. Later, I found that the problem was caused by the settings of NAT Mapping and NAT Keep Alive. It seemed that the router did not know or recognize to where it should route to the internal destination when inbound request was received, and hence, it dropped the call.
You may inspect whether there is any setting problem in your clearOS, which is used as your router/firewall, I supposed. |