The Day the World Stopped Talking
The Truth about VoIP over Fibre Broadband
WHY WE DON’T CONSIDER FIBRE BROADBAND TO BE “VOICE APPROVED”
Fibre Broadband or VDSL (Very High Speed Digital Subscriber Line) technology is widely established in the UK and offered by a number of different suppliers.
VDSL and VoIP
Connectivity from the Exchange to roadside cabinets is over fibre hence it also gets referred to as “fibre broadband” though the DSL connection to the end user is still provided over copper telephone lines. VDSL is increasingly being used by businesses for high speed Internet access.
With download speeds of up to 80Mbps it is not difficult to see why. However, a broadband circuit optimised for Internet browsing is not necessarily the best choice for VoIP (voice over IP).
What does VoIP need?
As one of the first companies in the UK to offer business quality SIP trunks, Spitfire pioneered the use of circuits that are specifically purposed for voice traffic. These circuits have technical characteristics that make them suitable for VoIP with guarantees to back them up.
To give satisfactory voice quality, it is generally considered that, a circuit must meet these technical requirements for VoIP:

How VDSL works
