I just tried talking to Orcon support about the unlimited plan and the Genius modem but I didn't get very far and I don't think CS understood my question.

I am currently  with another ISP and am looking at the service offered by Orcon.

The unlimited plan comes with the Genius Router which as a VOIP line included terminated in a POTS connector on the back of the modem.

I run an asterisk PBX so currently access trunks via a SIP connection.

The question is, am I able to access the phone line included in the unlimited plan via SIP or is the service locked to the Genius router only.

If you can't access the VOIP via SIP do Orcon offer the same plan without phone line at a lower price.