A telephone call processing method comprising the steps of: (i) receiving a telephone call for transfer to a first telephone number; (ii) determining whether the first telephone number has been set to divert calls to a second telephone number; and (iii) processing the call in dependence upon the determination...http://www.google.fr/patents/US7567663?utm_source=gb-gplus-shareBrevet US7567663 - Telephone call processing
