PTO/AlA/14 (03—13)
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`Application Data Sheet 37 CFR 1.76
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`—
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`COMMUNICATIONS
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`_—
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`PRODUCING ROUTING MESSAGES FOR VOICE OVER IP
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`Title of Invention
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`The application data sheet is part of the provisional or nonprovisional application for which it is being submitted. The following form contains the
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`Given Name
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`Residence Information (Select One) 0 US Residency
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`340a COROZAL WEST
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`PANAMA CITY
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`Prefix Given Name
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`STEVE
`NICHOLSON
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`HAMILTON
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`NZ
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`423 TAUWHARE ROAD, RD 3
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` HAMILTON
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`3283
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`Inventor
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`Legal Name
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`3
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`3
`‘
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`"
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`State/Province
`Countryi
`NZ
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`EFS Web 2.2.7
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`AT&T, EXh. 1002, p.
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`AT&T, Exh. 1002, p. 1
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`PTO/AIA/14 (03-13)
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`Approved for use through 01/31/2014. OMB 0651-0032
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`SMARB19.001C1
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`Title of Invention
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`PRODUCING ROUTING MESSAGES FOR VOICE OVER IP COMMUNICATIONS
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`City
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`NORTH VANCOUVER
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`W33
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`782 WEST 22ND STREET
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`EFS Web 2.2.7
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`AT&T, EXh. 1002, p. 2
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`AT&T, Exh. 1002, p. 2
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`PTO/AIA/14 (03-13)
`Approved for use through 01/31/2014. OMB 0651-0032
`US. Patent and Trademark Office; US DEPARTMENT OF COMMERCE
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`PRODUCING ROUTING MESSAGES FOR VOICE OVER IP COMMUNICATIONS
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`AT&T, EXh. 1002, p. 3
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`PTO/AIA/14 (03-13)
`Approved for use through 01/31/2014. OMB 0551-0032
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`PRODUCING ROUTING MESSAGES FOR VOICE OVER lP COMMUNICATIONS
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`AT&T, Exh. 1002, p. 4
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`PTO/AIA/14 (03-13)
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`Application Number Application Data Sheet 37 CFR 1.76
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`Title of Invention
`PRODUCING ROUTING MESSAGES FOR VOICE OVER IP COMMUNICATIONS
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`SMARB19.00101
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`PTO/AIA/14 (03-13)
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`PRODUCING ROUTING MESSAGES FOR VOICE OVER IP COMMUNICATIONS
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`AT&T, Exh. 1002, p. 6
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`PTO/AiA/14 (03-13)
`Approved for use through 01/31/2014. OMB 0551-0032
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`PRODUCING ROUTING MESSAGES FOR VOICE OVER lP COMMUNICATIONS
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`AT&T, EXh. 1002, p. 7
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`AT&T, Exh. 1002, p. 7
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`

`

`SMARB19.001C1
`
`PATENT
`
`PRODUCING ROUTING MESSAGES FOR VOICE OVER IP COMMUNICATIONS
`
`BACKGROUND OF THE INVENTION
`
`Cross Reference to Related Applications
`
`[0001]
`
`This application is a continuation of US. Application No. 12/513,147,
`
`filed March 1, 2010, which is a national phase entry of PCT/CA2007/001956,
`
`filed
`
`November 1, 2007, which claims priority to US. Provisional Application No. 60/856,212,
`
`filed November 2, 2006, all of which are incorporated in their entirety.
`
`Field of Invention
`
`[0002]
`
`This invention relates to voice over IP communications and methods and
`
`apparatus for routing and billing.
`
`Description of Related Art
`
`[0003]
`
`Internet protocol (IP) telephones are typically personal computer (PC)
`
`based telephones connected within an IP network, such as the public Internet or a private
`
`network of a large organization. These lP telephones have installed “voice—over—IP” (VolP)
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`software enabling them to make and receive voice calls and send and receive information in
`
`data and video formats.
`
`[0004]
`
`IP telephony switches installed within the IP network enable voice calls to
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`be made within or between IP networks, and between an IP network and a switched circuit
`
`network (SCN), such as the public switched telephone network (PSTN). If the IP switch
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`supports the Signaling System 7 (SS7) protocol, the IP telephone can also access PSTN
`
`databases.
`
`[0005]
`
`The PSTN network typically includes complex network nodes that contain
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`all information about a local calling service area including user authentication and call
`
`routing. The PSTN network typically aggregates all information and traffic into a single
`
`location or node, processes it locally and then passes it on to other network nodes, as
`
`necessary, by maintaining route tables at the node. PSTN nodes are redundant by design and
`
`thus provide reliable service, but if a node should fail due to an earthquake or other natural
`
`AT&T, EXh. 1002, p. 8
`
`AT&T, Exh. 1002, p. 8
`
`

`

`disaster, significant, if not complete service outages can occur, with no other nodes being
`
`able to take up the load.
`
`[0006]
`
`Existing VoIP systems do not allow for high availability and resiliency in
`
`delivering Voice Over IP based Session Initiation Protocol (SIP) Protocol service over a
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`geographically dispersed area such as a city, region or continent. Most resiliency originates
`
`from the provision of IP based telephone services to one location or a small number of
`
`locations such as a single office or network of branch offices.
`
`SUMMARY OF THE INVENTION
`
`[0007]
`
`In accordance with one aspect of the invention, there is provided a process
`
`for operating a call routing controller to facilitate communication between callers and callees
`
`in a system comprising a plurality of nodes with which callers and callees are associated. The
`
`process involves, in response to initiation of a call by a calling subscriber, receiving a caller
`
`identifier and a callee identifier. The process also involves using call classification criteria
`
`associated with the caller identifier to classify the call as a public network call or a private
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`network call. The process further involves producing a routing message identifying an
`
`address, on the private network, associated with the callee when the call is classified as a
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`private network call. The process also involves producing a routing message identifying a
`
`gateway to the public network when the call is classified as a public network call.
`
`[0008]
`
`The process may involve receiving a request to establish a call, from a call
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`controller in communication with a caller identified by the callee identifier.
`
`[0009]
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`Using the call classification criteria may involve searching a database to
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`locate a record identifying calling attributes associated with a caller identified by the caller
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`identifier.
`
`[0010]
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`Locating a record may involve locating a caller dialing profile comprising
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`a usemame associated with the caller, a domain associated with the caller, and at least one
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`calling attribute.
`
`[0011]
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`Using the call classification criteria may involve comparing calling
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`attributes associated with the caller dialing profile with aspects of the callee identifier.
`
`AT&T, EXh. 1002, p. 9
`
`AT&T, Exh. 1002, p. 9
`
`

`

`[0012]
`
`Comparing may involve determining whether the callee identifier includes
`
`a portion that matches an IDD associated with the caller dialing profile.
`
`[0013]
`
`Comparing may involve determining whether the callee identifier includes
`
`a portion that matches an NDD associated with the caller dialing profile.
`
`[0014]
`
`Comparing may involve determining whether the callee identifier includes
`
`a portion that matches an area code associated with the caller dialing profile.
`
`[0015]
`
`Comparing may involve determining whether the callee identifier has a
`
`length within a range specified in the caller dialing profile.
`
`[0016]
`
`The process may involve formatting the callee identifier into a pre—defined
`
`digit format to produce a re—formatted callee identifier.
`
`[0017]
`
`Formatting may involve removing an international dialing digit from the
`
`callee identifier, when the callee identifier begins with a digit matching an international
`
`dialing digit specified by the caller dialing profile associated with the caller.
`
`[0018]
`
`Formatting may involve removing a national dialing digit from the callee
`
`identifier and prepending a caller country code to the callee identifier when the callee
`
`identifier begins with a national dialing digit.
`
`[0019]
`
`Formatting may involve prepending a caller country code to the callee
`
`identifier when the callee identifier begins with digits identifying an area code specified by
`
`the caller dialing profile.
`
`[0020]
`
`Formatting may involve prepending a caller country code and an area code
`
`to the callee identifier when the callee identifier has a length that matches a caller dialing
`
`number format specified by the caller dialing profile and only one area code is specified as
`
`being associated with the caller in the caller dialing profile.
`
`[0021]
`
`The process may involve classifying the call as a private network call
`
`when the re—formatted callee identifier identifies a subscriber to the private network.
`
`[0022]
`
`The process may involve determining whether
`
`the callee identifier
`
`complies with a pre—defined username format and if so, classifying the call as a private
`
`network call.
`
`[0023]
`
`The process may involve causing a database of records to be searched to
`
`locate a direct in dial (DID) bank table record associating a public telephone number with the
`
`AT&T, EXh. 1002, p. 10
`
`AT&T, Exh. 1002, p. 10
`
`

`

`reformatted callee identifier and if the DID bank table record is found, classifying the call as
`
`a private network call and if a DID bank table record is not found, classifying the call as a
`
`public network call.
`
`[0024]
`
`Producing the routing message identifying a node on the private network
`
`may involve setting a callee identifier in response to a username associated with the DID
`
`bank table record.
`
`[0025]
`
`Producing the routing message may involve determining whether a node
`
`associated with the reformatted callee identifier is the same as a node associated the caller
`
`identifier.
`
`[0026]
`
`Determining whether a node associated with the reformatted callee
`
`identifier is the same as a node associated the caller identifier may involve determining
`
`whether a prefix of the re—formatted callee identifier matches a corresponding prefix of a
`
`username associated with the caller dialing profile.
`
`[0027]
`
`When the node associated with the caller is not the same as the node
`
`associated with the callee, the process involves producing a routing message including the
`
`caller identifier, the reformatted callee identifier and an identification of a private network
`
`node associated with the callee and communicating the routing message to a call controller.
`
`[0028]
`
`When the node associated with the caller is the same as the node
`
`associated with the callee, the process involves determining whether to perform at least one
`
`of the following: forward the call to another party, block the call and direct the caller to a
`
`voicemail server associated with the callee.
`
`[0029]
`
`Producing the routing message may involve producing a routing message
`
`having an identification of at least one of the callee identifier, an identification of a party to
`
`whom the call should be forwarded and an identification of a voicemail server associated
`
`with the callee.
`
`[0030]
`
`Producing a routing message identifying a gateway to the public network
`
`may involve searching a database of route records associating route identifiers with dialing
`
`codes to find a route record having a dialing code having a number pattern matching at least a
`
`portion of the reformatted callee identifier.
`
`AT&T, EXh. 1002, p. 11
`
`AT&T, Exh. 1002, p. 11
`
`

`

`[0031]
`
`The process may involve communicating the routing message to a call
`
`controller.
`
`[0032]
`
`The process may involve searching a database of supplier
`
`records
`
`associating supplier identifiers with the route identifiers to locate at least one supplier record
`
`associated with the route identifier associated with the route record having a dialing code
`
`having a number pattern matching at least a portion of the reformatted callee identifier.
`
`[0033]
`
`The process may involve loading a routing message buffer with the
`
`reformatted callee identifier and an identification of specific routes associated respective ones
`
`of the supplier records associated with the route record and loading the routing message
`
`buffer with a time value and a timeout value.
`
`[0034]
`
`The process may involve communicating a routing message involving the
`
`contents of the routing message buffer to a call controller.
`
`[0035]
`
`The process may involve causing the dialing profile to include a maximum
`
`concurrent call value and a concurrent call count value and causing the concurrent call count
`
`value to be incremented when the user associated with the dialing profile initiates a call and
`
`causing the concurrent call count value to be decremented when a call with the user
`
`associated with the dialing profile is ended.
`
`[0036]
`
`In accordance with another aspect of the invention, there is provided a call
`
`routing apparatus for facilitating communications between callers and callees in a system
`
`comprising a plurality of nodes with which callers and callees are associated. The apparatus
`
`includes receiving provisions for receiving a caller identifier and a callee identifier,
`
`in
`
`response to initiation of a call by a calling subscriber. The apparatus also includes classifying
`
`provisions for classifying the call as a private network cal or a public network call according
`
`to call classification criteria associated with the caller identifier. The apparatus further
`
`includes provisions for producing a routing message identifying an address, on the private
`
`network, associated with the callee when the call is classified as a private network call. The
`
`apparatus also includes provisions for producing a routing message identifying a gateway to
`
`the public network when the call is classified as a public network call.
`
`AT&T, EXh. 1002, p. 12
`
`AT&T, Exh. 1002, p. 12
`
`

`

`[0037]
`
`The receiving provisions may be operably configured to receive a request
`
`to establish a call, from a call controller in communication with a caller identified by the
`
`callee identifier.
`
`[0038]
`
`The apparatus may further include searching provisions for searching a
`
`database including records associating calling attributes with subscribers to the private
`
`network to locate a record identifying calling attributes associated with a caller identified by
`
`the caller identifier.
`
`[0039]
`
`The records may include dialing profiles each including a username
`
`associated with the subscriber, an identification of a domain associated with the subscriber,
`
`and an identification of at least one calling attribute associated with the subscriber.
`
`[0040]
`
`The call classification provisions may be operably configured to compare
`
`calling attributes associated with the caller dialing profile with aspects of the callee identifier.
`
`[0041]
`
`The calling attributes may include an international dialing digit and call
`
`classification provisions may be operably configured to determine whether the callee
`
`identifier includes a portion that matches an IDD associated with the caller dialing profile.
`
`[0042]
`
`The calling attributes may include an national dialing digit and the call
`
`classification provisions may be operably configured to determine whether the callee
`
`identifier includes a portion that matches an NDD associated with the caller dialing profile.
`
`[0043]
`
`The calling attributes may include an area code and the call classification
`
`provisions may be operably configured to determine whether the callee identifier includes a
`
`portion that matches an area code associated with the caller dialing profile.
`
`[0044]
`
`The calling attribute may include a number length range and the call
`
`classification provisions may be operably configured to determine whether the callee
`
`identifier has a length within a number length range specified in the caller dialing profile.
`
`[0045]
`
`The apparatus may further include formatting provisions for formatting the
`
`callee identifier into a pre—defined digit format to produce a re—formatted callee identifier.
`
`[0046]
`
`The formatting provisions may be operably configured to remove an
`
`international dialing digit from the callee identifier, when the callee identifier begins with a
`
`digit matching an international dialing digit specified by the caller dialing profile associated
`
`with the caller.
`
`AT&T, EXh. 1002, p. 13
`
`AT&T, Exh. 1002, p. 13
`
`

`

`[0047]
`
`The formatting provisions may be operably configured to remove a
`
`national dialing digit from the callee identifier and prepend a caller country code to the callee
`
`identifier when the callee identifier begins with a national dialing digit.
`
`[0048]
`
`The formatting provisions may be operably configured to prepend a caller
`
`country code to the callee identifier when the callee identifier begins with digits identifying
`
`an area code specified by the caller dialing profile.
`
`[0049]
`
`The formatting provisions may be operably configured to prepend a caller
`
`country code and area code to the callee identifier when the callee identifier has a length that
`
`matches a caller dialing number format specified by the caller dialing profile and only one
`
`area code is specified as being associated with the caller in the caller dialing profile.
`
`[0050]
`
`The classifying provisions may be operably configured to classify the call
`
`as a private network call when the re—formatted callee identifier identifies a subscriber to the
`
`private network.
`
`[0051]
`
`The classifying provisions may be operably configured to classify the call
`
`as a private network call when the callee identifier complies with a pre—defined username
`
`format.
`
`[0052]
`
`The apparatus may further include searching provisions for searching a
`
`database of records to locate a direct in dial (DID) bank table record associating a public
`
`telephone number with the reformatted callee identifier and the classifying provisions may be
`
`operably configured to classify the call as a private network call when the DID bank table
`
`record is found and to classify the call as a public network call when a DID bank table record
`
`is not found
`
`[0053]
`
`The private network routing message producing provisions may be
`
`operably configured to produce a routing message having a callee identifier set according to a
`
`username associated with the DID bank table record.
`
`[0054]
`
`The private network routing message producing provisions may be
`
`operably configured to determine whether a node associated with the reformatted callee
`
`identifier is the same as a node associated the caller identifier.
`
`AT&T, EXh. 1002, p. 14
`
`AT&T, Exh. 1002, p. 14
`
`

`

`[0055]
`
`The private network routing provisions may include provisions for
`
`determining whether a prefix of the re—formatted callee identifier matches a corresponding
`
`prefix of a username associated with the caller dialing profile.
`
`[0056]
`
`The private network routing message producing provisions may be
`
`operably configured to produce a routing message including the caller identifier,
`
`the
`
`reformatted callee identifier and an identification of a private network node associated with
`
`the callee and to communicate the routing message