Telephonic communications – Plural exchange network or interconnection – With interexchange network routing
Reexamination Certificate
1998-12-08
2001-12-11
Hong, Harry S. (Department: 2642)
Telephonic communications
Plural exchange network or interconnection
With interexchange network routing
C379S216010, C379S221090, C379S221120
Reexamination Certificate
active
06330324
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention generally relates to systems for routing telephone calls to appropriate numbers. More particularly, the present invention relates to an Advanced Intelligent Network (AIN) based system and methods for routing telephone calls based on the location of the calling party.
2. Acronyms
The written description provided herein contains acronyms which refer to various communication services and system components. Although known, use of several of these acronyms is not strictly standardized in the art. For purposes of the written description herein, acronyms will be defined as follows:
AIN—Advanced Intelligent Network
AMA—Automatic Message Accounting
CCIS—Common Channel Interoffice Signaling
CO—Central Office
CPN—Calling Party Number
CPR—Call Processing Record
DN—Dialed Number Trigger
DRS—Data Reporting System
EO—End Office (EO)
ISCP—Integrated Service Control Point
LSP—Local Service Provider
NPA—Number Plan Area, i.e., area code
NXX—Central Office Code
RTN—Routing Telephone Number
SCE—Service Creation Environment
SCP—Service Control Point
SCCP—Signaling Connection Control Part
SMS—Service Management System
SPC—Signaling Point Code
SS7—Signaling System 7
SSP—Service Switching Point
STP—Signaling Transfer Point
TAT—Terminating Attempt Trigger
TCAP—Transaction Capabilities Applications Protocol
3. Description of the Related Art
In recent years, a number of new telephone service features have been provided by advanced intelligent communications networks such as an Advanced Intelligent Network (AIN). The AIN evolved out of a need to increase the capabilities of the telephone network architecture to meet the growing needs of telephone service customers. The AIN architecture generally comprises two networks, a data messaging network and a trunked communications network. The trunked communications network handles voice and data communications between dispersed network locations, whereas the data messaging network is provided for controlling operations of the trunked communications network.
An illustration of the basic components of an AIN architecture is shown in FIG.
1
. As shown in
FIG. 1
, Central Offices (CO)
10
-
16
are provided for sending and receiving data messages from an Integrated Service Control Point (ISCP)
20
via a Signaling Transfer Point (STP)
30
-
34
. The data messages are communicated to and from the COs
10
-
16
and the ISCP
20
along a Common Channel Inter-Office Signaling (CCIS) network
22
. Each CO
10
-
16
serves as a network Service Switching Point (SSP) to route telephone calls between a calling station (e.g., station
40
) and a called station (e.g., station
48
) through the trunked communications network
24
-
26
. For more information regarding AIN, see Berman, Roger K., and Brewster, John H., “Perspectives on the AIN Architecture,” IEEE Communications Magazine, February 1992, pp. 27-32, the disclosure of which is expressly incorporated herein by reference in its entirety.
While prior AIN or AIN-type intelligent network applications may have provided various features to subscribers and users, these prior applications do not allow users to dial one telephone number and reach a single point of contact for multiple services provided by a subscriber. Current systems and methods require users to identify one of many possible numbers to call depending on the specific information or service desired from the subscriber. This requires users to know the telephone number of all departments or service groups of the subscriber that they need information from.
Moreover, none of the current systems and methods allow a user to dial an abbreviated telephone number to access services from a subscriber. Currently, the user must lookup, write down, or memorize a full seven or more digit number for each department or service group that they may need information from.
Therefore, a system and method is needed that allows users to dial one telephone number and reach a single point of contact for information and services provided by a subscriber, and that provides an abbreviated telephone number that is easy to remember for accessing the single point of contact for services from the subscriber.
SUMMARY OF THE INVENTION
Accordingly, the present invention is directed to a system and method for geographical call routing for a non-emergency calling service that substantially obviates one or more of the problems arising from the limitations and disadvantages of the related art.
It is an object of the present invention to provide an AIN system and method that routs calls to a non-emergency service based on the geographical location of the caller.
It is also an object of the present invention to provide an AIN system and method that allows users to dial one telephone number and reach a single point of contact for services provided by a subscriber.
It is a further object of the present invention to provide an AIN system and method that allows users to dial an abbreviated telephone number that is easy to remember for accessing a single point of contact for services from a subscriber.
Accordingly, one aspect of the present invention is directed to an advanced intelligent communications system for routing telephone calls based on the location of a calling party. The system includes: a plurality of call origination telephones; at least one switching device operatively connected to at least one of the plurality of call origination telephones, the at least one switching device servicing calls placed by at least one calling party using one of the plurality of call origination telephones; a processor operatively connected to the at least one switching device, the processor determining routing of the calls placed by the at least one calling party; a storage device operatively connected to the processor, the storage device containing location information related to the at least one calling party; and at least one destination telephone operatively connected to at least one of the at least one switching device, wherein the processor sends routing information to the at least one switching device for routing calls to one of the at least one destination telephone and a terminating announcement, based on the location of the at least one calling party.
According to another aspect of the present invention, each at least one switching device has an associated signaling point code that is used by the processor to determine the location of the at least one calling party relative to a defined service area.
According to yet another aspect of the present invention, the signaling point code indicates whether the at least one switching device services only calls within the defined service area.
According to a further aspect of the present invention, the signaling point code indicates whether the at least one switching device services calls both within the defined service area and outside of the defined area.
According to another aspect of the present invention, each signaling point code that indicates whether the at least one switching device services only calls within the defined service area, has an associated call routing telephone number.
According to yet another aspect of the present invention, the storage device contains information mapping the signaling point codes to the associated call routing telephone number for the at least one switching device that services only calls within the defined service area.
According to a further aspect of the present invention, for the signaling point codes that indicate the at least one switching device does not service any calls within the defined service area, the processor sends routing information to the at least one switching device to route the call to the terminating announcement.
According to another aspect of the present invention, the storage device contains information indicating whether the signaling point codes represent switching devices that service telephones within the service area.
According to yet another aspect of the present invention, the storage device contains information
Fosburgh Gregory Steven
Sabinson Richard E.
Tamasi Mark
Thompson Brenda S.
Greenblum & Bernstein P.L.C.
Hong Harry S.
SBC Technology Resources Inc.
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