When I was first setting up Lync 2010 for VoIP one of the things that really stumped me for a while was Normalisation Rules. In short these rules take human readable numbers and convert them to the standard for international calling (E.164) – its kinda like how computers take human readable DNS addresses (e.g. bbc.co.uk) and converts them to IP addresses (e.g.

So how do we apply this to UK phone numbers? Continue reading