British Telecom Journal

British Telecom Journal

4.11 - 1251 ratings - Source

But more importantly if an error has occurred, if for example, the customer misdialled the time of his alarm call - then ... of supplementary services was forced to listen to guidance announcements every time he used a particular service. ... Incoming calls barred a€” Enables the customer to bar incoming calls to his telephone.

Title:British Telecom Journal
Publisher: - 1980


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