Telephonic communications – Centralized switching system – Call distribution to operator
Reexamination Certificate
1999-06-17
2002-09-03
Smith, Creighton (Department: 2642)
Telephonic communications
Centralized switching system
Call distribution to operator
C379S265140
Reexamination Certificate
active
06445788
ABSTRACT:
FIELD OF THE INVENTION
The present invention is in the field of telephony communication and has particular application to methods including software for routing incoming telephony calls from multiple service control points to agent-level in a communication center wherein equal access is afforded to callers from separate routing systems.
BACKGROUND OF THE INVENTION
Telephone call processing and switching systems are, at the time of the present patent application, relatively sophisticated, computerized systems, and development and introduction of new systems continues. Much information on the nature of such hardware and software is available in a number of publications accessible to the present inventors and to those with skill in the art in general. For this reason, much minute detail of known systems is not reproduced here, as to do so may obscure the facts of the invention.
At the time of filing the present patent application there continues to be remarkable growth in telephone-based information systems. Recently emerging examples are telemarketing operations and technical support operations, among many others, which have grown apace with development and marketing of, for example, sophisticated computer equipment. More traditional are systems for serving customers of large insurance companies and the like. In some cases organizations develop and maintain their own telephony operations with purchased or leased equipment, and in many other cases, companies are outsourcing such operations to firms that specialize in such services.
A large technical support operation serves as a good example in this specification of the kind of applications of telephone equipment and functions to which the present invention pertains and applies, and a technical support organization will be used from time to time in the current specification for example purposes. Such a technical support system, as well as other such systems, typically has a country wide or even a world wide matrix of call centers for serving customer's needs. Such call center operations are more and more a common practice to provide redundancy and decentralization. However, the components of the present specification can apply to a single call center as well, and t home agent systems.
In a call center, a relatively large number of agents handle telephone communication with callers. Each agent is typically assigned to a telephone connected to a central switch, which is in turn connected to a public-switched telephone network (PSTN), well-known in the art. The central switch may be one of several types, such as Automatic Call Distributor (ACD), or a Private Branch Exchange (PBX).
An organization having one or more call centers for serving customers, typically provides one or more telephone numbers to the public or to their customer base, or both, that may be used to reach the service. The number or numbers may be published on product packaging, in advertisements, in user manuals, in computerized help files, and the like.
There are basically two scenarios. If the organization providing the service has a single call center, the number will be to the call center, and all further routing to an agent will be at the call center. If there are several call centers, the organization may provide several numbers, one for each call center, and the customer may be expected to use the number for the closest center, or for the center advertised to provide specifically the service he or she might need. In some cases the number provided will connect the caller with a first Service Control Point (SCP) which is adapted to pre-process incoming calls and forward the calls to other call centers.
Routing of calls, then, may be on several levels. Pre-routing may be done at SCPs and further routing may be accomplished at individual call centers. As described above, a call center typically involves a central switch, which may be, for example, an Automatic Call Distributor (ACD), or a Private Branch Exchange (PBX) or other equivalent (IP is switch less per se). The central switch is connected to the PSTN network, well known in the art. Agents, who are trained to handle customer service, use telephones connected to the central switch. This arrangement is known in the art as Customer Premises Equipment (CPE).
If the call center consists of just a central switch and connected telephone stations, the routing that can be done is very limited. Switches, although increasingly computerized, are limited in the range of computer processes that may be performed. For this reason additional computer capability in the art has been added for such central switches by connecting computer servers adapted to run control routines and to access databases. The processes of incorporating computer enhancement to telephone switches is known in the art as Computer Telephony Integration (CTI), and the hardware used is referred to as CTI equipment.
In a CTI system telephone stations connected to the central switch may be equipped also with computer terminals, so agents manning such stations may have access to stored data as well as being linked to incoming callers by a telephone connection. Such stations may be interconnected in a network by any one of several known network protocols, with one or more servers also connected to the network one or more of which may also be connected to a processor providing CTI enhancement, also connected to the central switch of the call center. It is this processor that provides the CTI enhancement for the call center.
When a call arrives at a call center, whether or not the call has been pre-processed at a SCP, typically at least the telephone number of the calling line is made available to the receiving switch at the call center by a telephone carrier. This service is available by most PSTNs as caller-ID information in one of several formats. If the call center is computer-enhanced (CTI) the phone number of the calling party may be used to access additional information from a database at a server on the network that connects the agent workstations. In this manner information pertinent to a call may be provided to an agent.
It is known to the inventors that more recently Data Network Telephony (DNT) communication has been integrated into the call center environment. Internet Protocol Network Telephony (IPNT), which is a sub-set of DNT, is most often used in today's DNT-capable call centers. Computer simulated telephony is now being practiced in many CTI call centers. In many cases, equipment is altered or modified to handle both Connection-Oriented-Switched-Telephony (COST) and DNT telephony simultaneously and in a seamless fashion. Because of added communication capabilities existing in today's call centers, a more appropriate term of communication center will hereinafter be used in this specification.
In a very large communication center, it is desired that all incoming calls whether from a COST network or from an IPNT network be handled efficiently by available agents. In some cases calls are routed from network level to a call center, and then further routed to agents at the communication center. Calls are typically distributed to such agents based on availability of the agent, and in this system availability of agents is tracked at the call center level. In other systems, employing what the inventors term agent-level routing, Service Control Points (SCPs) in the network route calls to agent level at call centers. In this arrangement agent availability is typically tracked at the network level, and updated from the call-center level. In either system If a first agent is unavailable, a caller must wait for the agent to become available, or be transferred to another available agent. When incoming calls to a communication center are from different routing systems in a telephony network it becomes difficult to insure equal and fair access to agents for all of the callers. This is due to various states of latency that exist in separate routing systems.
Latency factors such as equipment speed and line speed can vary, greatly over large g
Boys Donald R.
Central Coast Patent Agency Inc.
Genesys Telecommunications Laboratories , Inc.
Smith Creighton
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