I work for a VoIP and telephony provider, so I can talk about what is VoIP, how does it work, why would you want it, and a beginners guide to making and reciving calls over VoIP.
Some of these questions could cover topics such as;
- Financial benefit to VoiP (for both domestic and business)
- VoIP client recommendation such as land line/desk phones, wireless/DECT phones, softclients for PCs and mobile clients (smartphone apps)
- VoIP provider recommendations
- Common VoIP issues and a resolutions (SIP AGL, NAT, STUN, IPSEC)
In the future as my employer and I start to do more work with mobiles I can revisit the subject covering VoIP and mobile telephony also, unifying the two.