International telephone dialling codes for Africa generally begin with what number?
Subscriber trunk dialling name on the telephone dial, with the exception of London which had the two-digit code 01. Codes were later changed (e.g., London became 020, and Manchester 0161). Until 1992, calls to these cities from Ireland required the following codes: In that year, this changed to dialling in the international format , and the 03 range was withdrawn from use. Subscriber trunk dialling Subscriber trunk dialling (STD, also known as subscriber toll dialling) is a telephone system allowing subscribers to dial trunk calls without operator assistance. The term was introduced when it first became possible for long-distance calls to be dialled
Former Australian dialling codes Former Australian dialling codes The format of telephone numbers in Australia has changed over time to allow for the expansion of the subscriber base as technology has improved. The introduction of subscriber trunk dialling was slow, partly because of the distances of exchanges in some areas and partly due to the use of manual exchanges well into the 1980s. Initially, dialing codes covered a very small area, sometimes only one exchange, but gradually exchanges conglomerated to become large area codes. The length of codes varied; as early as 1971, some localities had area codes as long as seven digits, while