Outline — full article in progress
This page has the structure and introduction. The full article is being written by the network team. In the meantime, ask us directly.
The UK has one of the clearest numbering plans in Europe and some of the strictest caller ID rules. This guide covers the 01, 02 and 03 ranges, Ofcom's CLI requirements and setup notes for UK traffic. For rates and routing details, see our UK SIP trunk page.