I can definitely confirm that voxalot.com.au does NOT seem to support 1800 numbers. When I register directly with nsw.koalavoip.com.au the 1800 Telstra conferlink number works perfectly. When I register with Voxalot.com.au and route the number to the same Koala SIP server, I get a busy signal??? The number I am trying it 1800 063 720.
Can this please be raised as a bug?
P.S. - My ENUM replacement is 61${EXTEN:1} and according to the Test function at the bottom of the DialPlans page the number should be getting routed to
1800063720@nsw.koalavoip.com.au.