1 definition by J Webb

Top Definition
A branded term for a Personal Telephone number that allows the user to advertise a single number, and have that single number divert to many different telephone numbers. The term Callsure has become synonymous with 070 numbers in the same way that Hoover has become synonymous with Vaccuum Cleaners.
An example of a Callsure Number is 07050 123456 . When dialled this number will make a landline or mobile number ring.
by J Webb March 25, 2008
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