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AssigneeAmerican Telephone and Telegraph Company, AT&T Information Systems
InventorRobert D. Nalbone
Estimating the term…
The subject implied principal busy status indicator provides all covering users with an indication of the busy/idle status of the principal's line on a covered call. This is accomplished by equipping each covering user's telephone station set with a principal busy status indicator for every line appearance on the covering user's telephone station set. When a covered call is diverted from a principal's line to the covering user's telephone station set, the line appearance on which the covered call appears is lighted and the principal busy status indicator associated with the covering user's line appearance indicates the busy/idle status of the principal's line. The business communication system updates the state of the principal busy status indicator so the covering user knows when the called principal's line is idle.
In a business communication system, a method for providing call coverage for a plurality of principal telephone station sets by a plurality of covering station sets of a predetermined call coverage path and each of said covering station sets having a plurality of pairs of indicators with a call appearance one of the indicators of each pair displaying a call appearance and a status one of the indicators of each pair capable of displaying the status of any of said plurality of principal telephone station sets, and method comprising the steps of:
A business communication system for providing call coverage for a plurality of principal telephone station sets in a predetermined call coverage path, and said business communication system comprising:
Dependencies are inferred from the claim text.