Hello, Has anyone been able use a VoIP adapter over WiMAX (Bell Rural Internet or Rogers Portable Interet) ? I have a Bell WiMAX modem to play with for a couple of days and I can't get VoIP to work through it. Basically the adapter registers with Asterisk or with the other service without problems, but can't make or receive calls. I tried two different ATAs (a D-Link with built in wireless router and a Linksys SPA2100). The adapter gets a public IP address from the modem, so there's no NAT involved. The latency between my Asterisk server (installed in a different location, with public IP address again, no NAT) and the VoIP adapter is less than 50 ms, so that can't be a cause. If I turn on sip debugging on my Asterisk, I can see SIP the packets going back and forth during registration, but when I call my ATA there SIP messages are going only one way, from Asterisk to ATA, nothing coming back. Bell has a very lame statement in their FAQ at https://www.highspeedunplugged.sympatico.ca/CustomerPreSales/Landing/FAQ.aspx "There are many VoIP offerings on the market, all using different communication 'protocols' or methods of establishing a VoIP conversation. Unfortunately, we cannot guarantee that a particular VoIP service will work with your Sympatico Unplugged service..." My guess is they are blocking it on purpose.
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