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US 4,791,663 AGranted
Telephone status recognition and bypass system
AssigneeTelident, Incorporated
InventorsDavid T. Rockne, Lowell E. Johnson
Life of this patent
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AssigneeTelident, Incorporated
InventorsDavid T. Rockne, Lowell E. Johnson
Estimating the term…
A telephone status recognition and bypass system includes a plurality of status recognition units, and a controller. Each status recognition unit interfaces a subscriber's telecommunication line between a plurality of peripheral services and to a switch network, and includes status monitoring circuits and an SRU switch. The status monitoring circuits monitor status of calls incoming to and outgoing from the service subscriber, and produces status signals representative thereof. The SRU switch switchably interconnects the service subscriber, the switch network, and the peripheral services, for telecommunications in response to switching control signals. The controller is responsive to the status monitoring circuits, and produces switching control signals as a function of the status signals. The controller causes the SRU switch to interconnect the service subscriber to the selected peripheral service, thereby passing the switch network, when the status monitoring means produces status signals representative of an outgoing call from the service subscriber to the peripheral service.
A telephone status recognition and bypass system for interfacing, at a central office, each of at least one remotely located service subscriber's telecommunication lines to at least a first remotely located peripheral service over a first alternate trunk, and to a switch network at the central office, including:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Systems providing special services or facilities to subscribers: centralised arrangements for answering calls; Centralised arrangements for…
Automatic or semi-automatic exchanges: graded-service arrangements, i.e. some subscribers prevented from establishing certain connections
For connecting to private branch exchanges: arrangements in the private branch exchange
Telephonic communication
Term ended 12 Feb 2006 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
1. Field of the Invention
The present invention relates generally to telephone switching apparatus. In particular, the present invention is a status recognition and bypass system permitting a service subscriber (customer) to interface directly to a peripheral service (e.g. long distance vendor) thereby bypassing a central office switch network thereby alleviating its load.
2. Description of the Prior Art
FIG. 1 is a block diagram representation of the telephone status recognition and bypass system of the present invention.
Telephone status recognition and bypass system 10 of the present invention is illustrated generally in block diagram form by FIG. 1. Status recognition and bypass system 10 includes a plurality of status recognition units (SRU's) 14A and 14B, which interface service subscribers 16A and 16B with one or more remotely located peripheral services 18A, 18A' and 18B, 18B', respectively, such as special vendor srevices to which they subscribe, and a switch network 12. As will be understood from the following description, status recognition and bypass system 10 is extremely flexible and adaptable to a variety of applications.
Status recognition and bypass system 10 permits direct telecommunications between service subscribers 16A and 16B and services 18A, 18A' and 18B, 18B', respectively, by bypassing switch network 12, thereby reducing heavy traffic loads on currently installed telephone switch networks. As a result, large capital expenditures needed for expanded switching facilities will no longer be needed, or can be postponed. Status recognition and bypass system 10 can also be used for recordkeeping purposes.
Associated with SRU 14A (which is also representative of SRU 14B) is a peripheral interface adapter (PIA) 20A which includes both input ports 21A and output ports 23A, an SRU switch 22A, dial tone detector 24A, ring decoder 26A, tone/pulse decoder 28A, and loop current detector 30A. As shown, service subscriber 16A is interfaced for telecommunication with SRU switch 22A of SRU 14A through telecommunication line 36A. First and second services 18A and 18A', respectively, are interfaced with SRU switch 22A through telecommunication lines 48A and 46A, respectively. SRU switch 22A is interfaced for telecommunications with switch network 12 through telecommunication line 43A. Control signals from PIA output ports 23A are received by SRU switch 22A on bus 44A.