Process, arrangement, devices for seizure of a shared...

Details Process, arrangement, devices for seizure of a shared... Process, arrangement, devices for seizure of a shared...

2006-12-26

2006-12-26

Harold, Jefferey F. (Department: 2614)

Telephonic communications

Multi-line or key substation system with selective switching...

With exclusion or priority feature

C379S035000, C379S377000

Reexamination Certificate

active

07155000

ABSTRACT:
The invention relates to the control of access of various appliances of an installation which are connected to a telephone line. The appliances have a priority level. There is provision for the dispatching, on the request of an appliance performing a line seizure operation, to the other appliances, of an off-hook signal representative of the priority level of the appliance, when this level is higher than that of at least one other appliance of the installation. The signal is dispatched on the occasion of the line seizure operation and for the duration of the connection of the appliance to the line, if no off-hook signal of a higher priority level is dispatched. There is also provision for a disconnection of the line for any appliance which receives an off-hook signal dispatched for an appliance having a higher priority level.

REFERENCES:
patent: 4809317 (1989-02-01), Howe et al.
patent: 5003581 (1991-03-01), Pittard
patent: 5444772 (1995-08-01), Coker
patent: 5796789 (1998-08-01), Eftechiou
patent: 5978469 (1999-11-01), Benson
patent: 6002747 (1999-12-01), Eftechiou
patent: 6061438 (2000-05-01), Shen et al.
patent: 99/63765 (1999-12-01), None

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