The UK Public Switched Telephone Network is divided up by area into National Number Groups (NNG's), and then further divided up into dialling codes.
The structure of UK telephone numbers is a leading zero (replaced with +44 for international calls from outside the UK) followed by the NNG — a 2, 3, 4 or 5 digit dialling code (digits SA in the example below) to different geographic areas of the UK.
e.g.
- Telephone number (020) 7811 8055 is part of the "London Area" and so has NNG 2078:
| 0 | S | A | B | C | D | E | F | G | H | I |
|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 2 | 0 | 7 | 8 | 1 | 1 | 8 | 0 | 5 | 5 |
Famous quotes containing the words national, number and/or group:
“The national distrust of the contemplative temperament arises less from an innate Philistinism than from a suspicion of anything that cannot be counted, stuffed, framed or mounted over the fireplace in the den.”
—Lewis H. Lapham (b. 1935)
“It is the quality of the moment, not the number of days, or events, or of actors, that imports.”
—Ralph Waldo Emerson (1803–1882)
“...Women’s Studies can amount simply to compensatory history; too often they fail to challenge the intellectual and political structures that must be challenged if women as a group are ever to come into collective, nonexclusionary freedom.”
—Adrienne Rich (b. 1929)