Call Distribution Or Queuing Patents (Class 379/309)
  • Patent number: 5367568
    Abstract: In a switchboard terminal apparatus, a plurality of loop circuits are simultaneously handled by a switchboard operator. The number of loop circuits in the apparatus exceeds the capacities of screen displays and keys/lamps. A normal loop circuit controller controls loop circuits up to the capacities as normal loop circuits. A virtual loop circuit controller controls loop circuits exceeding the capacities as virtual loop circuits. A first switching circuit for switching control of the loop circuit, which processes a given call, from the normal loop circuit controller to the virtual loop circuit controller in accordance with a call release request operation of the given call by the switchboard operator. A second switching circuit switches a call being controlled by the virtual loop circuit controller to a call under the normal loop circuit controller when a reentering operation of the switchboard operator occurs by regarding the call as a virtual incoming call to the normal loop circuit.
    Type: Grant
    Filed: August 15, 1992
    Date of Patent: November 22, 1994
    Assignee: NEC Corporation
    Inventors: Nobuyuki Sakai, Hiroaki Kikuchi
  • Patent number: 5335269
    Abstract: In an automatic call director-type system, it is often more desirable to direct an incoming call to an immediately available agent who has less than perfect knowledge of the subject matter rather than forcing a caller to wait for the best qualified agent. The present invention relates to an algorithm implemented in computer software for placing an incoming call in a plurality of queues and then offering the call to primary and secondary desirability agents in each of the queues in a prescribed order if any one of these groups of agents has an agent standing by and able to accept a call. Otherwise, the call is offered to the next available agent regardless of the capability of that agent. The concept includes the capability of expanding the pool of potential agents in the queue with age of a call when the incremental expansion pool of agents selected can be based on their backlog of calls for other applications where they may have primary responsibility.
    Type: Grant
    Filed: March 12, 1992
    Date of Patent: August 2, 1994
    Assignee: Rockwell International Corporation
    Inventor: Joseph C. Steinlicht
  • Patent number: 5329581
    Abstract: A system for completing a series of calls from a calling party to a plurality of called parties served by a common terminating switch and located in the same general geographic area, is implemented by a) establishing a first communication path from the calling party to the terminating switch b) establishing a second communication path from the terminating switch to the the called party using routing information received from the calling party regarding the called party c) bridging those two communication paths to form a complete connection from the calling party to the called party d) preserving the first communication path and reusing it to complete all the calls in the series.
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: July 12, 1994
    Assignee: AT&T Bell Laboratories
    Inventors: Albert Friedes, Barbara I. Gaechter, Paramdeep S. Sahni, Susan M. Zoccolillo
  • Patent number: 5327491
    Abstract: Briefly, this invention contemplates the provision of a call pacing method in which the number of calls to dial is periodically (e.g. every two seconds) determined on the basis of anticipated operator availability. The determined number of calls are dialed, subject to a limiting function. Calls in progress are interrupted in a short time slot just prior to first ring if the number of operators available to respond to an answered call falls below a predetermined percentage of the total number of system operators.
    Type: Grant
    Filed: January 11, 1993
    Date of Patent: July 5, 1994
    Assignee: International Telesystems Corp.
    Inventor: Dzu-Wan Syu
  • Patent number: 5327490
    Abstract: A system and method is disclosed for controlling call placement rates for telephone systems providing call pacing system in which outbound calls are automatically paced so that as attendants become available a valid call is completed to be handled by the available attendant. The system takes advantage of a system which statistically monitors the average call completion time, the average agent in-use time, the average time to answer and the probability of a valid answer. Call placing overlap is controllable in conjunction with the monitored statistical parameters to achieve operation around any desired system operating parameter. The system is controlled by a plurality of precisely defined operational tasks operating in a hierarchical manner.
    Type: Grant
    Filed: February 19, 1991
    Date of Patent: July 5, 1994
    Assignee: InterVoice, Inc.
    Inventor: Ellis K. Cave
  • Patent number: 5311574
    Abstract: An automatic call distribution system wherein, when no agent is immediately available, and the calculated delay before an agent is likely to become available is above a predetermined threshold, a record is made of the calling number (either received as part of call set up or inputs from the caller), and the record is queued. When an agent becomes available, or after a predetermined time, the ACD removes the top entry from the queue, places a call to the received calling number, and presents the call to an available agent.
    Type: Grant
    Filed: October 23, 1991
    Date of Patent: May 10, 1994
    Assignee: AT&T Bell Laboratories
    Inventor: Konstantin Livanos
  • Patent number: 5309513
    Abstract: A telephone system (10) having an automatic call distributor (12a-c) for receiving calls and distributing the calls to at least one ubiquitous agent associated with the automatic call distributor (12a-c), a switch (20) connected to the automatic call distributor (12a-c), and a device (16) for controlling the switch (20) for connecting the switch (20) to the ubiquitous agents.
    Type: Grant
    Filed: July 2, 1992
    Date of Patent: May 3, 1994
    Assignee: Rockwell International Corporation
    Inventor: James D. Rose
  • Patent number: 5291492
    Abstract: A system for external control of call processing including a network controller that is connected to receive a third party control message regarding a call operation to be executed by one or more line controllers and is programmed to determine what first party steps need to be taken by the line controller or controllers to execute the call operation, to generate first party control messages to carry out the steps, and to send the first party control messages over a network via a message transfer interface to one or more line controllers, the line controllers being connected to the network via message transfer interfaces to receive the first party control messages and being programmed to execute the first party messages on the network.
    Type: Grant
    Filed: December 18, 1991
    Date of Patent: March 1, 1994
    Assignee: Unifi Communications Corporation
    Inventors: G. Wayne Andrews, Jeffrey A. Fried, Jerry Gechter, Robert L. Pokress
  • Patent number: 5289523
    Abstract: In a telecommunications relay system employing automated text-to-speech for conversion of a text message entered by a sound impaired person, the delay between the completion of the automated text-to-speech conversion and the assignment of a live shared attendant for transcribing and transmitting that which the unimpaired person says is eliminated by completing the text-to-speech conversion for each text message and its associated end-of-message code word without the introduction of any delay and, immediately thereafter, accepting and storing the unimpaired person's speech into a voice buffer at least until a live attendant is assigned to the relay session. When an attendant is eventually assigned to the call, the attendant retrieves the speech stored in the buffer.
    Type: Grant
    Filed: July 31, 1992
    Date of Patent: February 22, 1994
    Assignee: AT&T Bell Laboratories
    Inventors: Karen L. Vasile, Leonard R. Kasday
  • Patent number: 5278898
    Abstract: A system for electronically managing calls in a hold queue wherein the hold queue is prioritized into a number of priority categories according to user selectable priority criteria. As an operator becomes available, the system selectively assigns the calls on hold to an available operator in a sequential manner according to the priority category of the calls and the type of hold queue utilized.
    Type: Grant
    Filed: May 30, 1991
    Date of Patent: January 11, 1994
    Assignee: Davox Corporation
    Inventors: John E. Cambray, B. Scott Smith
  • Patent number: 5249223
    Abstract: A call-load control arrangement for a first call-answering center, such as an E911 service PSAP, causes calls destined for the first center and not yet routed thereto to be rerouted by a central office from the central office directly to a second, alternate, call-answering center while the first center is in call overload. A function monitors current parameters of call-answering performance of the first center and periodically compares them against predetermined criteria of acceptable call-answering performance to determine whether call overload exists. In the E911 service PSAP, the function automatically closes and opens a switch to activate and deactivate the "night-service" or "trunk make-busy" link to cause the central office respectively to reroute calls away from, or to route calls to, the PSAP.
    Type: Grant
    Filed: January 3, 1991
    Date of Patent: September 28, 1993
    Assignee: AT&T Bell Laboratories
    Inventor: Vincent D. Vanacore
  • Patent number: 5249221
    Abstract: A telephone answering service system in which calls to a telephone which can not be answered are forwarded to a unique number identifying a line in a first telephone company (TELCO) service and immediately forwarded by the first TELCO service to a second TELCO service which uniformly distributes received calls over a group of lines connected to the answering service and provides called number ID and line identification over a separate data line to the answering service. The answering service has a number of operator stations where the status of the group of lines is displayed and processing data relative to the called party is available to answer and forward received calls to another number.
    Type: Grant
    Filed: January 24, 1992
    Date of Patent: September 28, 1993
    Assignee: The Partner, Inc.
    Inventor: Thomas D. Ketring
  • Patent number: 5247569
    Abstract: There is disclosed an inbound/outbound call handling system and method in which outbound calls are automatically paced so that as attendants become available a valid call is completed to be handled by the available attendant. As an inbound call is received, the system responds by halting attempts to place an outbound call and queueing the inbound call for handling by the next available attendant. The system takes advantage of an algorithm which statistically monitors average call completion time, average attendant in-use time, average time to answer and probability of a valid answer. Call placing and receiving overlap is controllable in conjunction with the monitored statistical parameters to achieve operation around any desired system operating parameter. The system is controlled by a plurality of precisely defined operational tasks operating in a hierarchical manner.
    Type: Grant
    Filed: January 13, 1992
    Date of Patent: September 21, 1993
    Assignee: InterVoice, Inc.
    Inventor: Ellis K. Cave
  • Patent number: 5241584
    Abstract: The present invention automatically initiates a telephone call to a given destination. At the same time, the progress of the call is monitored. The time of a ring back and voice answer received from the destination are recorded to an output file. At the end of the voice answer, a pre-recorded voice message is sent by the system to the person answering at the destination. Thereafter, the recorded data is used to determine the response time for that particular telephone destination. A plurality of destinations can be tested.
    Type: Grant
    Filed: August 22, 1990
    Date of Patent: August 31, 1993
    Assignee: MCI Communications Corporation
    Inventors: William C. Hardy, Thomas H. Johnson, Jr.
  • Patent number: 5206903
    Abstract: Automatic Call Distribution (ACD) equipment is improved by matching the information needs of an incoming caller with the particular expertise of a telemarketing agent who handles such calls. Each incoming call is assigned up to three prioritized skill numbers that estimate skill requirements of the calling party. Each agent possesses up to four skill numbers that represent various particular abilities of that agent. Numbers 1 through 9 are used. Upon arrival of the incoming call, a search is made for a match between the first caller skill number and an available agent possessing that skill. If no match is found, a similar search is made with respect to the second caller skill number. After a predetermined delay, a search is made with respect to the third caller skill number. When a match is found, the incoming call is connected to the agent possessing that skill. The longer that an incoming call remains unanswered, the larger the pool of agents becomes that will be allowed to handle the call.
    Type: Grant
    Filed: December 26, 1990
    Date of Patent: April 27, 1993
    Assignee: AT&T Bell Laboratories
    Inventors: Joylee E. Kohler, Eugene P. Mathews, Robert D. Nalbone, Craig F. Palmer
  • Patent number: 5185786
    Abstract: Method and apparatus for recovering in-bound calls to a call center, which in-bound calls were directed to overflow. An embodiment of the inventive method includes the steps of: logging telephone numbers of in-bound calls that overflow the handling capacity of the call center, which telephone numbers are provided by the signaling capacity of the network to the call center; determining when call center agents become available; automatically initiating calls back to the logged telephone numbers; detecting when calls are answered; and causing call center agents to be connected thereto.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: February 9, 1993
    Assignee: Dialogic Corporation
    Inventor: Nicholas Zwick
  • Patent number: 5179589
    Abstract: Briefly, this invention contemplates the provision of a call pacing method in which the number of calls to dial is periodically (e.g. every two seconds) determined on the basis of anticipated operator availability. The determined number of calls are dialed, subject to a limiting function. Calls in progress are interrupted in a short time slot just prior to first ring if the number of operators available to respond to an answered call falls below a predetermined percentage of the total number of system operators.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: January 12, 1993
    Assignee: International Telesystems Corporation
    Inventor: Dzu-Wan Syu
  • Patent number: 5168515
    Abstract: An automatic call distributing system for automatically distributing telephone calls placed over a network to one of a plurality of agent stations connecting the network via network service interfaces and providing agent status messages to the network, the system including receiving circuit connected via a network service interface to the network for receiving the agent status messages and a call arrival message from the network indicating that an incoming call has been made on the network, and routing circuit responsive to the receiving means for generating a routing signal provided to the network to connect the incoming call to an agent station through the network. Also disclosed are handling transitions of agent stations using transition notifications, transition requests and forced response signals.
    Type: Grant
    Filed: March 25, 1991
    Date of Patent: December 1, 1992
    Assignee: Unifi Communications Corporation
    Inventors: Jerry Gechter, Jeffrey A. Fried
  • Patent number: 5155763
    Abstract: A predictive dialing system having a computer connected to a telephone switch stores a group of call records in its internal storage. Each call record contains a group of input parameters, including the date, the time, and one or more workload factors. Workload factors can indicate the number of pending calls, the number of available operators, the average idle time, the connection delay, the completion rate, and the nuisance call rate, among other things. In the preferred embodiment, each call record also contains a dial action, which indicates whether a call was initiated or not. These call records are analyzed by a neutral network to determine a relationship between the input parameters and the dial action stored in each call record. This analysis is done as part of the training process for the neutral network.
    Type: Grant
    Filed: December 11, 1990
    Date of Patent: October 13, 1992
    Assignee: International Business Machines Corp.
    Inventors: Joseph P. Bigus, Richard A. Diedrich, Charles E. Smith
  • Patent number: 5144653
    Abstract: A telephone system including a switching circuit (3) connected to a plurality of extension telephone sets (1-1 to 1-n, 1-p) a plurality of office lines (4-1 to 4-m) for selectively connecting the respective extension telephone sets and the respective office lines, a control unit (6) for connecting an extension telephone set and an office line through the switching circuit (3), a main memory (8) for registering the extension telephone sets diverted into respective terminating call dedicated telephone sets. When a key provided at an extension telephone set is pressed in a predetermined process to input a data for diverting the extension telephone set into a terminating call dedicated telephone set, the control unit (6) registers the extension telephone set into main memory (8).
    Type: Grant
    Filed: March 19, 1991
    Date of Patent: September 1, 1992
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Norio Masuoka
  • Patent number: 5134652
    Abstract: A communication console station links a plurality of communication resources (101, 103, and 105) for use by an operator. Incoming calls are placed in an incoming-call queue (207), calls on hold are placed in a holding queue (209), and all available communication resources are placed in a resource queue (211) The operator presses a single button (303, 305, or 307) to obtain the top resource from the associated queue (207, 209, or 211), which lists resources according to a predetermined priority.
    Type: Grant
    Filed: August 23, 1991
    Date of Patent: July 28, 1992
    Assignee: Motorola, Inc.
    Inventors: Allan G. Brown, Joseph DiFonzo, Daniel C. Sullivan, Peggy K. Matson, Sheree Johnson
  • Patent number: 5073890
    Abstract: This invention relates to an automatic call distributor (ACD) arrangement for economically providing ACD service from remote ACD agents. A remote ACD agent position is located near a local switching system which connects to an ACD host switch via a telecommunication network comprising a common channel signaling facility. The remote ACD agent position and an ACD process at the host switch communicate with each other by sending data messages via the common channel signaling facility and the local switching system. A front-end process at the host switch acts as a data message interface between the remote ACD agent position and the ACD process by performing protocol conversion between the common channel signalling facility message format and the ACD process message format. The front-end process also establishes a voice connection between the host switch and the remote ACD agent position. The ACD process connects incoming customer to the remote ACD agent position for servicing of the call by the remote ACD agent.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: December 17, 1991
    Assignee: AT&T Bell Laboratories
    Inventor: Peter J. Danielsen
  • Patent number: 5025468
    Abstract: In a telephone automatic call distribution system (ACD), incoming telephone calls are assigned to a queue. Additionally, announcements are peridically provided to the incoming callers usually notifying the caller the system is processing the call and the manner of such processing. The number of agents available to handle calls is controlled by a load factor expressed as a ratio of incoming calls in the queue to number of agents available. This load factor is used as a threshold level, which when exceeded, causes the system to add an additional agent or additional groups of agents, increasing the probability the calls longest in the queue will be answered. The oldest call or the call that was first in and not yet answered is passed along to the next available agent group added to the system.
    Type: Grant
    Filed: May 4, 1989
    Date of Patent: June 18, 1991
    Assignee: Harris Corporation
    Inventors: Parminder S. Sikand, Mary J. McAllister, John Henel, Allen L. Jackson, Karen Bell
  • Patent number: 4953204
    Abstract: This invention relates to methods and apparatus for queuing calls to a multilocation service provider having a plurality of automatic call distributors (ACDs). If all circuits to the ACDs are unavailable, a call is queued in one of a plurality of queues. One or more of these queues will allow call completion to any ACD of the service provider as soon as an agent of that ACD becomes available. Advantageously, the average waiting time for customers to that service provider is reduced, thereby improving service. In accordance with one feature of the system, the caller can select one of a plurality of choices of music on hold as offered by the service provider.
    Type: Grant
    Filed: October 17, 1989
    Date of Patent: August 28, 1990
    Assignee: AT&T Bell Laboratories
    Inventors: Robert F. Cuschleg, Jr., Brian D. Freeman, Kevin B. Kelly, Philip J. Patti, Anthony J. Perinelli, Amy K. Shannon
  • Patent number: 4951310
    Abstract: An automatic call distribution system includes a network switch having a plurality of pilot extensions, a plurality of agents being split into a plurality of agent groups, trunks provided for each of the pilot extensions, and line circuits provided for each of the agents. The system also includes a memory which stores a route table provided for each of the pilot extensions. The route table defines some agent groups among the plurality of agent groups. The defined agent groups are to be connected to the related one of pilot extensions. A control circuit seeks an idle agent relating to the agent groups defined by the related one of the route tables, and establishes a route between the call and the sought idle agent through the related trunk, network switch, and line circuit.
    Type: Grant
    Filed: May 16, 1989
    Date of Patent: August 21, 1990
    Assignee: Fujitsu Limited
    Inventors: Yosuke Honda, Takako Akazawa
  • Patent number: 4893301
    Abstract: An automatic call distribution (ACD) switching system having a plurality of agent/trunk interface circuits for selectively connecting a plurality of telephone trunks to a plurality of agent workstations. The ACD switching system includes at least a first line interface module having a shelf control module for controlling a plurality of carrier card slots. At least one of the carrier card slots includes a carrier card for supporting a plurality of agent/trunk interface circuit "subcards" in closely-aligned parallel relation to the carrier card. Each carrier card and the shelf control module include digital processing circuits and an HDLC transceiver to facilitate the interconnection of first and second agent/trunk interface circuits upon a call processing request for service. In the preferred embodiment, control information used to effect the interconnection of the agent/trunk interface circuits is transmitted throughout the switching system in a dedicated timeslot along a digital voice PCM bus.
    Type: Grant
    Filed: July 29, 1988
    Date of Patent: January 9, 1990
    Assignee: Teknekron Infoswitch Corporation
    Inventors: Gerald W. Andrews, William E. Dunnigan, E. Fletcher Haselton, William J. Redwood
  • Patent number: 4881261
    Abstract: A system having calls substantially selected and dialed to customers at such a paced rate that the system will keep a group of agents at full occupancy with calls on which the system has detected voice answer. As the size of the agent group changes, this predictive pacing is adjusted so that answered calls do not have to be delayed while waiting for an available agent or agents do not have to wait for calls to become available.
    Type: Grant
    Filed: June 29, 1988
    Date of Patent: November 14, 1989
    Assignee: Rockwell International Corporation
    Inventors: Jean R. Oliphant, Harold W. Workman, Jasvantrai C. Shah
  • Patent number: 4858120
    Abstract: A method for controlling arrivals to servers, comprising: regulating arrivals, by initiating a processor generating arrivals or by re-routing or turning away arrivals; measuring durations of service; computing and updating time statistics, including mean, minimum, maximum expected and standard deviation of duration of service thereby estimating expected duration of service; measuring transit times from the point of regulating arrivals to start of service and thereby estimating expected transit times; measuring a ratio of numbers of service initiations to numbers of arrivals at the point of regulating arrivals; recording starting time of each current service; noting present time; comparing present time to starting time, and thereby determining time in progress for each service; comparing time in progress to expected duration of service, and estimating time remaining in service for each customer currently in service; comparing estimated time remaining in service to estimated transit time from the point of regul
    Type: Grant
    Filed: March 18, 1987
    Date of Patent: August 15, 1989
    Assignee: International Telesystems Corp.
    Inventor: Douglas A. Samuelson
  • Patent number: 4829563
    Abstract: The present invention describes a method and apparatus for predictive dialing in a multi-operator telephone system which improves the productivity of operators while simultaneously reduces customer "unattended" calls. These objectives are achieved by generating a prediction of the number of operators expected to be available at the end of a predetermined time interval in the future, as well as a prediction of the number of calls expected to be successfully completed during that time interval. The predicted number of calls is then weighted by an "weighting" factor which is controlled by variations in the percentage of unattended calls and variations in the average operator idle-time between calls. The system dynamically adjusts the number of calls dialed based on short term comparisons of the weighted predicted number of calls versus the predicted number of operators, and based on periodic adjustment of the weighting factor.
    Type: Grant
    Filed: April 7, 1988
    Date of Patent: May 9, 1989
    Assignee: Teknekron Infoswitch Corporation
    Inventors: Gary B. Crockett, Jocelyn J. Torres-Ball, Arthur J. Olender
  • Patent number: 4654845
    Abstract: An arrangement for achieving multi-processing is disclosed for use in a communication system where it is desired to have several independent processors operating in parallel on stimuli received from the connected terminals. Each such terminal is associated with a particular processor and that processor serves to control connections involving its associated stations. Stimuli from the station are stored in a queue and processed in an intermixed fashion such that stimuli from the connection are processed in order of arrival of the stimulus, but stimuli from different connections are processed without regard to the relative order of arrival of stimuli between connections.
    Type: Grant
    Filed: March 18, 1985
    Date of Patent: March 31, 1987
    Assignees: AT&T, AT&T Information Systems Inc.
    Inventor: Jishnu Mukerji