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Title: Arrangement serving operator assistance calls requiring routing back to originating offices
Claims: What is claimed is: 1. A traffic service position system comprising a plurality of operator positions (OPPOS1-OPPOSN), a plurality of toll trunks (2-) terminated in a toll office, network and transmission means for connecting said toll trunks to said operator positions including a first concentrator (8:1) connecting said toll trunks to transmission paths (BRT1-BRTN) extendable to said operator positions, and CHARACTERIZED IN THAT said system further comprises a second concentrator (2:1) terminating said toll trunks thereon and physically associated with said first concentrator; a plurality of trunks of a first type (1- ) terminated on said second concentrator and extending thereto from a local office; a plurality of trunks of a second type (3- ) terminated on said second concentrator and extendable therefrom to said local office; a controller (CTR1) for controlling said second concentrator to selectively connect a calling one of said first type trunks to one of said second type trunks or to one of said toll trunks dependent upon the destination of the call; and wherein said network and transmission means also connect said second type trunks to said operator positions. 2. A traffic service position system comprising a plurality of operator positions, a plurality of toll trunks terminated in a toll office, network and transmission means selectively controllable to connect said toll trunks to said operator positions, and data processing means for controlling said network and transmission means and CHARACTERIZED IN THAT said system further comprises a plurality of local trunks of a first type extending to a local office; a plurality of local trunks of a second type extendable to said local office; a concentrator terminating each of said toll trunks, each of said first type local trunks and each of said second type local trunks, said concentrator controllable by said data processing means to connect calling ones of said first type local trunks either to idle ones of said toll trunks or idle ones of said second type local trunks depending upon the anticipated call destination of telephone calls being placed via said calling first type local trunks; and said network and transmission means are also selectively controllable by said data processing means to connect said second type local trunks to said operator positions. 3. A traffic service position system comprising a plurality of operator positions; a plurality of toll trunks terminated in a toll office; network and transmission means controllable to connect said toll trunks to said operator positions including a first concentrator, a lesser number of communication paths and a network; and data processing means for controlling said network and transmission means, wherein THE IMPROVEMENT COMPRISES a second concentrator in physical proximity to said first concentrator; a plurality of local trunks terminated in a local office and on said second concentrator; a plurality of loopback trunks having at least one termination on said second concentrator and extendable back to said local office, each of said loopback trunks also being connectable to said operator positions via said network and transmission means; and said data processing means also controls said second concentrator to connect said local trunks to either said toll trunks or to said loopback trunks. 4. A traffic service position system in accordance with claim 3 wherein said local trunks include means for detecting call destination information received through said local office and for supplying said destination information to said data processing means and wherein said data processing means controls said second concentrator to connect a calling one of said local trunks either to an idle one of said loopback trunks or to an idle one of said toll trunks depending upon the expected destination of the call instituted via said one calling local trunk. 5. A traffic service position system in accordance with claim 3 wherein said local trunks include means for detecting destination information received through said local office and for supplying said destination information to said data processing means and wherein said data processing means (1) controls said second concentrator to connect a calling one of said local trunks to one of said loopback trunks if the destination information for said one calling local trunk only specifies operator assistance or indicates the call is to be completed to said local office, or (2) otherwise controls said second concentrator to connect said one calling local trunk to one of said toll trunks. 6. In a traffic service position system, a concentrator intermediate a toll office and a local office, a plurality of trunks of a first type connecting said local office with said concentrator, a plurality of toll trunks connecting said concentrator with said toll office, a plurality of trunks of a second type extendible from said concentrator to said local office, said first type trunks including means for detecting destination information for calls being placed thereover, selecting and controlling means responsive to destination information detected for a calling one of said first type trunks for selecting an idle toll trunk or an idle second type trunk dependent respectively upon whether the call is destined to a station accessible via said toll office or only requests operator assistance, and for controlling said concentrator to establish a connection from said one calling first type trunk either to said selected toll trunk or to said selected second type trunk, and network and transmission means for connecting said selected toll trunk or said selected second type trunk to an operator position, said selecting and controlling means including means for receiving additional destination information for the call from said operator position, and if a connection were established from said one calling first type trunk to said selected second type trunk, said selecting and controlling means controls said concentrator to reestablish said last-mentioned connection from said one calling first type trunk to an idle toll trunk if the additional call destination information indicates the call is destined to a station accessible via said toll office. 7. In combination, a two-sided concentrator intermediate a local office and a toll office, a plurality of trunk circuits of a first type associated with said concentrator and connected to said local office and to one side of said concentrator, a plurality of trunk circuits of a second type associated with said concentrator and connected to said toll office and to the other side of said concentrator, a plurality of trunk circuits of a third type associated with said concentrator and connected to said other side of said concentrator and connectable to said local office, a network controller responsive to control information for selectively establishing and disestablishing connections between said first type and second type trunk circuits and between said first type and third type trunk circuits, means associated with said first type trunk circuits for detecting call destination information for a call extended from said local office to one of said first type trunk circuits, means for analyzing said call destination information and for providing said network controller with control information specifying that said one first type trunk circuit should be connected to one of said third type trunk circuits if said call destination information only requests operator assistance or if said call is destined for said local office, and otherwise specifying that said one first type trunk circuit should be connected to one of said second type trunk circuits, transmission means for connecting said one second type trunk circuit or said one third type trunk circuit to an operator position, and means for receiving additional call destination information for said call from said operator position and applying said additional call destination information to said analyzing means and, said analyzing means also reanalyzes said additional call destination information and provides said network controller with new control information specifying that said one first type trunk circuit should be reconnected from said one third type trunk circuit to one of said second type trunk circuits if said call is now destined to a station accessible via said toll office. 8. In combination a network, a plurality of originating circuits terminated on said network and over which calls are received, a plurality of toll trunks terminated on said network and in a toll office, a plurality of local trunks terminated on said network and directly extendible to a local office, each of said toll trunks and local trunks including a branch extendible to an operator position, and control means responsive to a calling one of said originating circuits only requesting an operator assistance type call for controlling said network to connect said one originating circuit to one of said local trunks and for extending the branch of said one local trunk to said operator position, said control means including means for receiving additional call destination information from said operator position and said control means controls said network to reconnect said one originating circuit to one of said toll trunks if said additional call destination information indicates that the call is destined for a station accessible via said toll office. 9. A traffic service position system comprising a plurality of toll trunks each terminated in a toll office and each including a branch, a plurality of operator positions, switching and transmission means, including a first concentrator and a network and a plurality of transmission paths therebetween, controllable to selectively connect the branches of said toll trunks to said operator positions, data processing means for controlling said switching and transmission means, and CHARACTERIZED IN THAT said system further comprises a second concentrator also terminating each of said toll trunks; a plurality of two-way local trunks each terminated in a local office and on said concentrator and usable to establish connections from said local office to said concentrator and vice versa; a plurality of loopback trunks each having two terminations on said concentrator and each including a branch; said data processing means responsive to call destination information for a calling one of said local trunks either for 1. controlling said second concentrator to connect said one local trunk to a termination of one of said loopback trunks if said call destination information indicates only operator assistance is requested or if said call destination information identifies a called station served by said local office, or 2. controlling said second concentrator to connect said one local trunk to one of said toll trunks if said call destination information identifies a called station accessible via said toll office; and wherein said switching and transmission means is also controllable by said data processing means to selectively connect the branch of said one loopback trunk to one of said operator positions. 10. A traffic service position in accordance with claim 9 further comprising means for detecting additional call destination information, if any, input from said one operator position and wherein said data processing means in response to said detected call destination information (1) controls said concentrator to reconnect said one local trunk to one of said toll trunks if said detected additional call destination information specifies that the call is now destined for a station accessible via said toll office, or (2) controls said concentrator to connect the other termination of said one loopback trunk to another one of said two-way local trunks to route the call back to said local office if the call is still destined for a station served by said local office. 11. In combination, a network, a plurality of originating circuits terminated on said network, a plurality of trunk circuits of a first type terminated on said network and extending to a first destination, a plurality of trunk circuits of a second type terminated on said network and extending to a second destination, each of said first type and second type trunk circuits including a branch extendible to an operator position, data processing means responsive to call destination information received for a calling one of said originating circuits for analyzing said call destination information and for controlling said network to connect said one calling originating circuit to one of said first type trunk circuits, and for extending the branch of said one first type trunk circuit to an operator position, and said data processing means including means for detecting additional call destination information entered at said operator position and said data processing means reanalyzes said additional call destination information and recontrols said network to reconnect said one calling originating circuit to one of said second type trunk circuits and extends the branch of said one second type trunk circuit to an operator position. Other info: Inventors: Joel, Jr., Amos Edward (South Orange, NJ, US) Application Number: 636027 Filing Date: 1975-11-28 Publication_date: 1977-02-08 Assignee: Bell Telephone Laboratories, Incorporated (Murray Hill, NJ) Primary Class(es): 379/22.01 379/223, 379/240, 379/333 Other Classes: US Patent Ref:
Other Refs: Primary Examiner: Cooper, William C. Assistant Examiner: Attorney: Landis; Martin S. |
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