Related articles:
E.164
9-1-1
Telephone
Numbers in Chinese culture
Public switched telephone network
Telephone numbering plan
Key terms:
number
call
telephone
dial
exchange
letters
digits
telephone numbers
vite
fast
caller
operator
format
prefix
new york
area code
connected
subscriber
switchboard
reserved
assigned
first two
two letters
recommendation
telephone company
dialling
switches
combinations
director telephone system
emergency services number
businesses
united kingdom
international telephone
telephone exchange
townsend
lowell
two or three digits
numbering range
called party
intercept
trunk
purposes
telephone network
extension
telephone numbering plan
perry mason
directory
north america
united states
consisted
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