Make sure it's a Pi 2, not a B+ or a 'Version 2' as some slightly unscrupulous sellers are now listing the old ones!
The only thing I haven't got fixed yet is how to 'resize' the image (currently 4GB) into the full 8 or 16 GB sd card.
With PIAF you can use raspi-config option 1, easy, with FreePBX, for some god unbeknown reason (which is documented)
that doesn't work. I followed the 'manual resize' guide but ended up trashing the installation 1st time around so have left that alone for now.
But it's not exactly rocket science, apparently it's a doddle if you have access to another Linux system, so I will just burn off a Live CD for the laptop.
That said for call recording I am going to use an external USB thumb (when I owrk out how, but apparently it isn't hard, you just need to insert and root own it, 'chown' I think they call it.
I knew nothing about linux until this weekend - I had a pi before but just used it to run RISC OS.
Don't be tempted by cheap CISCO castoff VOIPs by the way, apparently they are very proprietary and they charge more than
the phone is worth for firmware download access.. That's just what I've read though.
I was going to use Peter (I noticed today he has now removed all traces of his real name form fiverr but still on there...) but for the phone
I thought a female voice would be better.