Hey guys,
I've got a friend who runs a small business from his home and currently has a single Telecom line with faxability support. He has major problems with congestion on the line with 4 staff and no call transfer/extensions etc. so I've suggested he look at a VOIP PBX solution and use OpenVFX.

We are just trying to figure out the best way to port the numbers. I had another friend who did exactly the same thing on Vodafone and they just turned the line into naked DSL but after ringing Xnet they say the Telecom line (including internet) would just be cancelled if we port the numbers?

I suggested we do a new line install of pure naked DSL (and cancel the Telecom line once the porting was complete) as this would be the cleanest but they said this would be $220. What's the best way to go about this by:

a) minimize phone downtime
b) minimize line installation cost

Internet downtime isn't so important as they can just use 3g.