While traditional PBX systems may appear to be a sound investment at face value, VitalPBX exposes the often-overlooked ...

Centrepoint Technologies's TalkSwitch 48-CVA PBX promises VoIP to SMBs, combining four lines with four VoIP trunks and as many as 32 extensions in a unit that is smaller than a breadbox.

The common questions page on BT's home page says: "Business Highway cannot be used through a switch (PBX) and does not support Direct Dial In (DDI) or Line Hunting, whereas ISDN 2e does." ...