I tested iiNet VoIP from my parents' OptusNet Cable Internet connection and it was able to register and make outbound calls without a problem. I didn't test it to the extent of answering the call, but the recipient phone was ringing, which is further than what I can get with voxalot.
iiNet VoIP with voxalot: inbound works^, outbound fails. So, what could the possibilities be as to the cause?
* iiNet blocking/disallowing the particular method that voxalot performs?
* iiNet rejecting requests based on the User-Agent field used by voxalot?
^basic test consisted of dialling DID and VoIP phone ringing. I've not tested beyond this.
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