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`M-8801, 628355 vi
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`Express Mail Label(J 487742455US
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`TELEPHONE CALL CONTROL SYSTEM FOR THE PUBLIC SWITCHED
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`TELEPHONE NETWORK
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`Samuel F. Wood
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`Peggy Asprey
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`Jerry A. Klein
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`FIELD OF THE INVENTION
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`This invention relates to telephone services and, in particular, to a system for allowing
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`a subscriber to select features of the subscriber's telephone service.
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`BACKGROUND
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`People have used various means for limiting interruptions due to the telephone. In the
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`past, people used switchboards and secretaries to screen incoming, or inbound, calls. Voice
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`mail systems took over some of this role both in the home and in the central office. Today,
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`there are web-based companies managing 3rd-party call control, via the toll-switch network,
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`which allow users to enter call control information through a web portal. There are also edge
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`devices in each of the public telephone company's central offices which provide local
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`control, but offer an extremely limited number of features and do not provide true 3rd-party
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`call control.
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`The web-based toll systems provide good user interaction but they are not economical
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`and cannot take advantage of local number portability because they do not provide local
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`control and connectivity.
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`The Public Switched Telephone Network (PSTN) consists of a plurality of edge
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`switches connected to telephones on one side and to a network of tandem switches on the
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`other. The tandem switch network allows connectivity between all of the edge switches, and a
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`signalling system is used by the PSTN to allow calling and to transmit both calling and called
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`party identity.
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`Until now, optional features were provided by the local service telephone company
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`(telco) through the edge switch at the central office (CO). It was not possible to provide
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`YMAX CORPORATION v. FOCAL IP, LLC
`FOCAL IP, LLC EX2044 - 1
`Application No. 09/565,565
`IPR2016-01258
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`

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`M-8801, 628355 vi
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`thr ough any other means. Control of these features was done thr ough the
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`first party ( calling party) or the second party ( called party), or worse yet, manually by calling
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`the business office.
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`In the past, numerous devices have been built that allow the connection of two lines
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`together at an edge switch. These devices can be used to add features to a telephone network
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`by receiving
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`a call on one line and then dialing out on another line. The problem with these
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`devices is that, because they are connected through an edge switch, transmission losses and
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`impairments occur, degrading the overall connection. In addition, signalling limitations
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`prevent full control, by the subscriber or the system, over the call.
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`The invention described herein connects at the tandem, thereby eliminating these
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`problems.
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`In the edge devices residing in the PSTN central offices, the 1st party (the calling
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`party) has numerous features available ( dialing options). The 2nd party { called party) also has
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`options available such as call forwarding, but these features typically require access from the
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`first or second party's device and are extremely awkward to program. The user interaction is
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`company to with the telephone not only awkward, it is limited and requires interaction
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`provision them. In other words, past systems for provisioning, meaning addition,
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`modification, or control of telephone features, required a subscriber to make the feature
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`selection through the telephone business office. Central office workers would then implement
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`the provisioning under request of the business office.
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`Call Forwarding is one popular provision. There is signification transmission
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`degradation for Call Forwarding to take place. The calling party pays for a call to the edge
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`device,
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`and the edge subscriber, the called party, pays for the call to the forwarding number.
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`3rd-party call control means is needed.
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`For enhanced inbound call control to occur, a direct
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`A variety of services have arisen to address the problems mentioned above. Many of
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`these systems allow the called party to make changes to his/her call forwarding attributes
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`which do not allow direct 3rd-party call control. These services provide good user interaction,
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`some via the internet, but they rely upon the toll network through the use of "800" numbers.
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`This requires the subscriber to pay by the minute and does not allow the subscriber to take
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`advantage of number portability
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`in order to obtain 3rd-party call control. There are other toll
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`For example, MCI offers a service where
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`network mechanisms for remote call forwarding.
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`YMAX CORPORATION v. FOCAL IP, LLC
`FOCAL IP, LLC EX2044 - 2
`Application No. 09/565,565
`IPR2016-01258
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`

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`M-8801, 628355 vi
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`the customer can remotely change the forwarding target number for "800" numbers.
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`Contacting the ultimate end-user before terminating the first incoming call is similar to the
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`manner in which "800" credit calls and collect calls are processed, but these are not done at
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`the local subscriber level.
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`In addition to these toll services, there are edge devices that perform some of the same
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`services. Edge devices such as phones and PBXs that include voice mail, inter-active voice
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`response, call forwarding, speed calling, etc., have been used to provide additional call
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`control. These devices allow the phone user direct control over incoming and outgoing calls.
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`The disadvantage of edge devices is that they add cost, degrade voice and transmission
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`quality, can be difficult to program, are not easily programmed remotely, can require the user
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`to pay for two lines, provide lower quality of service, and cannot provide the same level of
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`functionality as a system that controls the PS1N directly. There are Voice Over -Internet
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`Protocol (V oiP) products emerging that provide better user interfaces and control but they do
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`not take advantage and voice quality of the PS1N.
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`SUMMARY
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`The present invention adds direct control of third party call control features, but does
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`not suffer from any of the disadvantages listed above, and allows the subscriber to manage
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`his/her telephone system in a dynamic and exceptionally useful manner that is not currently
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`available through the existing PSTN. The invention allows enhanced direct third-party call
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`control features, such as selective call routing and remote dialing, to be added to the PS1N
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`(Public Switched Telephone Network) using local call control and providing dynamic
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`provisioning of the system by the subscriber. Direct 3rd-party control means that the ability
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`to provision the 3rd-party features is directly available to a subscriber, eliminating the need to
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`go through the telephone company (telco) business office.
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`In one embodiment, the system includes a processor (referred to herein as a tandem
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`access controller) connected to the PSTN which would allow anyone to directly provision,
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`that is to say set-up and make immediate changes to, the configuration of his or her phone
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`line. In another embodiment, a tandem access controller (TAC) subsystem is connected
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`internally to the PSTN in a local service area. The TAC provides features, selected by the
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`subscriber, to all edge switches connected to the PSTN tandem switch. Connecting directly to
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`YMAX CORPORATION v. FOCAL IP, LLC
`FOCAL IP, LLC EX2044 - 3
`Application No. 09/565,565
`IPR2016-01258
`
`

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`/}··
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`M-8801, 628355 vl
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`the PSTN tandem switch (or embedding the system into the tandem switch) eliminates the
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`signal degradation problems previously described.
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`In one embodiment, the system allows provisioning of features via the internet under
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`direct control of the subscriber. Recently, several products have been introduced that provide
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`a means of controlling features via the public internet. However, all these devices fall short in
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`that they require the subscriber to obtain an "800" number or some other number that requires
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`the subscriber to pay a toll charge each time a call is made. The present invention connects
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`locally, so no toll charges are incurred.
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`The web-enhanced services in one embodiment of the invention coexist with and
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`overlay the local phone service at the local level, thereby providing good econotiiics and user
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`interaction, single number access to multiple subscriber devices, connectivity without
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`transmission impairments and true, direct 3rd-party call control.
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`The present invention relies upon use of local telephone facilities thereby eliminating
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`all the extra charges associated with making toll calls. It also allows the user to take
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`advantage of number portability and keep his/her existing public phone number.
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`BRIEF DESCRIPTION OF THE DRAWINGS
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`Fig. 1 illustrates the tandem access controller (TAC) of the present invention
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`connected to the existing PSTN tandem switch, the TAC providing features for the
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`subscriber's telephone as requested by the subscriber via the web.
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`Fig. 2 illustrates a system similar to Fig. I but showing multiple tandem switches and
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`TAC's and also showing how the subscriber may, in additional to using the standard
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`telephone, make phone calls using Voice Over IP via a conventional digital telephone.
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`Fig. 3 is a flowchart of one method that a person may use to set up a subscriber
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`account and to designate features the subscriber would like for his/her telephone.
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`Fig. 4 is a flowchart of a method that can be performed by the TAC in response to the
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`subscriber (or other service) controlling the TAC, using the web (or other packet-based
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`system), to change the subscriber's telephone provisioning or perform another function, such
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`as make a VoIP call.
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`YMAX CORPORATION v. FOCAL IP, LLC
`FOCAL IP, LLC EX2044 - 4
`Application No. 09/565,565
`IPR2016-01258
`
`

`

`M-8801, 628355 vi
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`Fig. 5 is a flowchart of a method that can be performed by the TAC in response to an
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`inbound call to the subscriber.
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`Fig. 6 is a flowchart of a method performed by the subscriber and the TAC when the
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`subscriber desires to make an outbound call via the web or using a conventional telephone.
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`Fig. 7 illustrates a system, using the TAC, that allows wireless cell phones to obtain
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`the same provisioning options as the conventional telephones.
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`Fig. 8 illustrates a system, using the TAC, that allows fax and modem calls to benefit
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`from the provisioning offered by the TAC.
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`DETAILED DESCRIPTION OF THE EMBODIMENTS
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`Fig. 1 shows a tandem access controller (TAC) 10 that allows an authorized
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`subscriber 12 to establish 3rd-party control criteria for calls to the subscriber's telephone 14
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`(having a "public" phone number that callers dial). In one embodiment, the TAC 10 is a
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`programmed processor. The TAC 10 may use any combination of hardware, firmware, or
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`software and, in one embodiment, is a conventional computer programmed to carry out the
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`functions described herein.
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`The TAC 10 is connected to or inside the conventional PSTN tandem switch 16 such
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`that calls may flow through the TAC IO in the same manner as the existing PSTN tandem
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`switch, except that additional 3rd-party features are applied to the call. As is well known,
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`PSTN tandem switches are exchanges that direct telephone calls (or other traffic) to central
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`offices 17, 18 or to other tandem switches. Details of the operation of the existing phone
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`network may be found in the publication entitled ''New Net SS7 Tutorial," by ADC
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`Telecommunications, copyright 1999, incorporated herein by reference. Additional details
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`may be found in the numerous books describing the PSTN.
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`The PSTN tandem switch 16 directs a first call (from the calling party 20 to the
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`subscriber's phone 14 using the subscriber's public phone number) to the TAC 10, which in
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`turn places a second call, subject to 3rd-party control information, to the subscriber's
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`"private" phone number without yet terminating the first call. When the subscriber 12
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`terminates (or answers) the second call, the TAC 10 terminates the first call and connects it to
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`the second call, thereby connecting the calling party 20 to the subscriber 12. Hence, the
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`YMAX CORPORATION v. FOCAL IP, LLC
`FOCAL IP, LLC EX2044 - 5
`Application No. 09/565,565
`IPR2016-01258
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`

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`M-8801, 628355 vi
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`calling party essentially calls the TAC 10, using the subscriber's public phone number, and
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`the TAC 10, after processing the call using the selected features, calls the subscriber, as
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`appropriate, using the subscriber's private phone number and connects the two calls. The
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`process is transparent to the parties.
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`The TAC 10 is connected inside the PSTN in the sense that it is not an edge device
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`such as a PBX or central office (CO) switch because it does not connect directly to
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`subscribers. Rather, it redirects calls to subscribers. The TAC 10 provides intelligent
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`interconnection between a calling party and a subscriber.
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`The reader should keep in mind that although only one tandem switch 16 is shown in
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`Fig. 1, the invention will apply equally well to a network of tandem switches, a.s-shown in
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`Fig. 2. Fig. 2 also illustrates how the subscriber can make calls using voice over IP via a
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`conventional digital telephone 21.
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`Fig. 1 illustrates the preferred method for an authorized subscriber to modify the 3rd(cid:173)
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`party control criteria by means of the world wide web 22 (and web server 23) using an
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`internet browser. By "authorized" we mean a subscriber who is registered and has "logged(cid:173)
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`in" with appropriate security and password controls. The subscriber 12 interacts with the web
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`22 via the Internet to quickly and easily specify the enhanced 3rd-party call control features.
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`Web 22 then relays this information, in appropriate form, to the TAC 10. Preferably, the link
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`to the TAC 10 uses a secure protocol. Examples of features that can be selected by the
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`subscriber include: conditional call blocking, call forwarding, call altering, time of day
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`conditions, day of week conditions, follow-me, caller recognition/password, caller ID, call
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`screening/retrieval from voice mail, speed dialing, interactive voice response, and speech
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`recognition. Any other feature could be added. These features can be implemented in the
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`TAC 10 using known software techniques since such features are known. Message outgoing
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`call control includes: click-to-dial calling and group calling/messaging.
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`The invention may also include ivr/vm/voverip.
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`Fig. 1 uses a public internet portal connected via a data link to the TAC 10 or other
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`interface system. As a registered subscriber, a user logs onto the portal (Fig. 3) and is granted
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`access, allowing the user to make additions or changes to features such as speed calling, call
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`forwarding, selection of such descriptors as time of day, busy status, callerID status, etc. A
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`user-friendly web page leads the subscriber through the various procedures and available
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`YMAX CORPORATION v. FOCAL IP, LLC
`FOCAL IP, LLC EX2044 - 6
`Application No. 09/565,565
`IPR2016-01258
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`(~ ·.<fl
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`M-8801, 628355 vl
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`features. The selections made by the subscriber are translated into provisioning data and
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`transmitted to the TAC 10. The TAC 10 in turn keeps track of incoming and outgoing calls
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`based on this information.
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`The subscriber can also program a set of the call control features via a telephone link
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`in the event a data link connection is unavailable.
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`Fig. 4 is a flowchart of actions that may be taken by the TAC 10 in response to the
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`subscriber (or other service) controlling the TAC, using the web or other packet-based
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`system, to change the subscriber's telephone provisioning or perform another function, such
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`as make a VoIP call.
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`Fig. 5 is a flowchart of actions taken by the TAC 10 in response to an inbound call
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`(using the subscriber's public phone number) to the subscriber. Examples of some of the
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`actions taken by the TAC 10 are:
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`Receives SS7 data indicating an incoming call
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`Stores phone numbers downloaded from provisioning system
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`I
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`Charts identity of calling party
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`Checks time of day
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`Stores lists of numbers in groups used for processing incoming calls
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`Places outgoing calls in response to incoming calls according to information
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`downloaded on the data link.
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`Incoming call data is received by the TAC 10 from the tandem switch 16. The TAC
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`10 processor checks calling and called numbers, class of service, time of day, number lists,
`etc. In some cases additional data is gathered from the calling party via a DSP (Digital Signal
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`Processing) system and stored in the system memory. The DSP system is used to play call
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`progress tones and voice announcements as required. Voice announcements can be played
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`through the DSP system. In response to the call data, an outgoing call to the subscriber 12
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`may be placed back through the tandem switch 16 by TAC 10. The TAC 10 links the two
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`calls and monitors the connection.
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`FOCAL IP, LLC EX2044 - 7
`Application No. 09/565,565
`IPR2016-01258
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`

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`M-8801, 628355 vi
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`Information about the call may be collected by the TAC 10 and sent to the subscriber
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`or a 3rd party for display. Such information may be the length of the call or information used
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`to bill the subscriber for the use of the system. The provisioning system can also collect
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`control information from a 3rd party and relay it back to the TAC 10, which will then affect
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`the call accordingly.
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`Fig. 6 is a flowchart of actions taken by the subscriber 12 and the TAC 10 when the
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`subscriber desires to make an outbound call via the web or using a conventional telephone.
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`When using the web to place a call, the subscriber may simply click a name on the computer
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`screen 26 using a mouse.
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`Fig. 7 illustrates a system, using the TAC 10, that allows wireless cell phones 28 to
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`obtain the same provisioning options as the conventional telephones 14. A local cell 30 and a
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`cell switch 32 are also shown in Fig. 7.
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`Fig. 8 illustrates a system, using the TAC 10, that allows fax and modem calls to
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`benefit from the provisioning offered by the TAC 10. The TAC 10 may interface the ISP 36
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`through the web 22.
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`One embodiment of the invention allows a subscriber to view the current state of
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`his/her telephone via the Internet. Internet is a term of art by which we mean an
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`interconnection of packet switched networks. Prio! to this invention there was no way for a
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`user to examine the status of a telephone line. Recently, several products have been
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`introduced that provide a means of examining the voice message boxes.
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`An internet portal is connected via a data link to the TAC 10. When a user logs onto
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`the internet portal and is granted access to an individual subscription, the user can examine
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`the status of calls/features. This information is transmitted from the TAC 10 to the web portal
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`and translated into user viewables. The TAC 10 keeps track of incoming and outgoing calls
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`based on this information.
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`The TAC 10 may be implemented using conventional processor hardware. The
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`connection to the tandem switch 16 may be as simple as a telephone circuit, since the TAC 10
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`receives an incoming call from a caller and processes the call. Devising the
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`software/firmware use to control the TAC 10 is well within the capability of those skilled in
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`YMAX CORPORATION v. FOCAL IP, LLC
`FOCAL IP, LLC EX2044 - 8
`Application No. 09/565,565
`IPR2016-01258
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`

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`M-8801, 628355 vi
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`the art since the various control features that can be made available are generally already
`known.
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`Certain advantages that can be obtained using the invention include the following:
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`Web-Based Telecom Navigator
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`Manage Incoming Call Control
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`Conditional Call Blocking/Forwarding/Alerting
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`Time-of-Day, Day-of-Week, Follow-Me, Caller
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`Recognition/Password, Caller ID, etc.
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`Call Screening/Retrieval from Voice Mail
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`Interactive Voice Response and Speech Recognition
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`Manage Outgoing Call Control
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`•
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`Click-to-Dial Calling
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`• Group Calling and Messaging
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`Web-Based Billing
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`Web-Driven Personal Communications Manageme_nt
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`Cost-Effective Single Phone Number Access
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`On-Line "Personal Digital Assistant"
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`On-Line "Telcom Navigator"
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`Inspired User Interaction
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`Secure and Reliable Technology
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`Cost-Effective Single Phone Number Access
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`CLEC Status
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`• Free Local Calls, Incoming Calls (not 800 Toll Service)
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`• Retain Current Number (Local Number Portability)
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`• Low-Cost Calling Throughout LAT A
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`YMAX CORPORATION v. FOCAL IP, LLC
`FOCAL IP, LLC EX2044 - 9
`Application No. 09/565,565
`IPR2016-01258
`
`

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`r1)
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`M-8801, 628355 vi
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`• Flat-Rate Foreign Exchange
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`• Single Installation Covers Entire LATA
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`• VoIP Toll-Bypass
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`Compatible With Existing Devices, Standards
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`• Standard DTMF and VoIP Phones
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`• Wireless Phones
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`• Standard Wired/Wireless and PIM Browsers
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`Web-Based Personal Digital Assistant
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`Centralized and Consistent Personal Data
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`• Build Once, Use Anywhere
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`• Private/Public Phone Directories and Calendars
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`•
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`"Post-It" Style Annotation of Numbers
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`Web Dialing
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`• Click-to-Dial from Web Pages, Directories, Calendars
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`• Multiple Phone List Management
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`Unified Messaging
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`• Voice Mail Access, Prompts, Alert Via Web
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`User Interaction
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`Expected Behavior
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`• Compatible with Familiar Products (e.g. Palm Pilot)
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`• Commonality Between All Wired and Wireless
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`Mode-Based Definition and Selection
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`• Vacation, Dinner Time, Go Away, Family Call Waiting
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`• Templates
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`YMAX CORPORATION v. FOCAL IP, LLC
`FOCAL IP, LLC EX2044 - 10
`Application No. 09/565,565
`IPR2016-01258
`
`

`

`M-8801, 628355 vi
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`Learning Modes
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`• Persona-Based User Interaction Design
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`• Speech recognition
`
`• Windows drag and drop
`
`Automatic Data Capture
`
`• Build Phone List Based on Collected Usage Information
`
`• Drag and Drop Into Lists
`
`Secure and Reliable Technology
`
`Separate Web-Site and Link Gateway
`
`• No Direct External Access to Gateway
`
`• Additional Security Layer
`
`• No Denial-of-Service to Voice Links
`
`VoIP Link Degradation Detection
`
`• Automatic Cutover to PSTN
`
`E-Commerce Security
`
`• Billing Encryption
`
`While particular embodiments of the present invention have been shown and
`
`described, it will be obvious to those skilled in the art that changes and modifications may be
`
`made without departing from this invention in its broader aspects and, therefore, the
`
`appended claims are to encompass within the true spirit and spirit and scope of this invention.
`
`11
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`20
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`YMAX CORPORATION v. FOCAL IP, LLC
`FOCAL IP, LLC EX2044 - 11
`Application No. 09/565,565
`IPR2016-01258
`
`

`

`M-8801, 628355 vi
`
`CLAIMS
`
`We Claim:
`
`1. A controller connected to a PSTN tandem switch comprising:
`
`means for receiving a first call intended for a subscriber;
`
`means for placing a second call to said subscriber; and
`
`means for interconnecting the two calls to complete the original incoming call.
`
`12
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`YMAX CORPORATION v. FOCAL IP, LLC
`FOCAL IP, LLC EX2044 - 12
`Application No. 09/565,565
`IPR2016-01258
`
`

`

`M-8801, 628355 vi
`
`TELEPHONE CALL CONTROL SYSTEM FOR THE PUBLIC SWITCHED
`
`TELEPHONE NETWORK
`
`Samuel F. Wood
`
`Peggy Asprey
`
`Jerry A. Klein
`
`ABSTRACT OF THE DISCLOSURE
`
`In one embodiment, the system includes a processor (referred to herein as a tandem
`
`access controller) connected to the PSTN which would allow anyone to directly provision,
`
`that is to say set-up and make immediate changes to, the configuration of his or her phone
`
`line. In another embodiment, a tandem access controller (TAC) subsystem is connected
`
`internally to the PSTN in a local service area. The TAC provides features, selected by the
`
`subscriber, to all edge switches connected to the PSTN tandem switch. In one embodiment,
`
`the TAC is controlled by the subscriber using the web.
`
`13
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`1
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`5
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`10
`
`YMAX CORPORATION v. FOCAL IP, LLC
`FOCAL IP, LLC EX2044 - 13
`Application No. 09/565,565
`IPR2016-01258
`
`

`

`0 -LL
`
`rl
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`
`YMAX CORPORATION v. FOCAL IP, LLC
`FOCAL IP, LLC EX2044 - 14
`Application No. 09/565,565
`IPR2016-01258
`
`

`

`'1..
`0
`,.. •• >
`•• ••
`
`...... e:: 0 >
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`YMAX CORPORATION v. FOCAL IP, LLC
`FOCAL IP, LLC EX2044 - 15
`Application No. 09/565,565
`IPR2016-01258
`
`

`

`"<}
`
`Subscriber Registration and Login
`
`~
`I
`User accesses web
`site UIS (User
`Interaction System}.
`
`No
`
`Yes
`
`User views
`information on
`becoming a
`subscriber including
`features and
`charges.
`
`Simple
`experimentation
`with features
`such as web
`dialing.
`
`Done.
`
`Sign-up
`
`User provides personal
`data Including login name ~-­
`and password and credit
`card information.
`
`User selects ·vanity"
`PPN (Extra Cost Option).
`
`System selects
`PPN.
`
`System selects PPN
`from local database.
`
`Acronyms
`PPN- Public Phone Number allocated byooeCloud (known to public
`on business cards, etc., rings oneCloud).
`'
`LPN- Local Phone Number from local telco (rings user's phone but
`Is only known to oneCloud and local telco).
`UIS- User Interaction System - web site user Interfaces with in
`order lo control phone features.
`TAC· Tandem Access ControUer - System that dlrecUy accesses
`thePSTN.
`
`~ \ c.. 3
`
`User logs in (apply
`standard forgotten
`password procedures}.
`
`System displays
`Subscriber's private
`information page.
`
`User views messages,
`changes configuration,
`modifies mail lists, etc.
`
`User enters a tentative
`PPN, system checks I
`data base for availability.
`
`No
`
`System sends provisioning
`packet to PSTN Controller.
`
`Controller acknowledges
`provisioning packet.
`
`User's new PPN and login name
`are acknowledged and User is
`welcomed as a new Subscriber.
`
`Done.
`
`
`
`YMAX CORPORATION v. FOCAL IP, LLC
`FOCAL IP, LLC EX2044 - 16
`Application No. 09/565,565
`IPR2016-01258
`
`

`

`.
`
`. ·j~ .... ~,,,;,
`/:·
`Incoming Message Processing for
`PSTN Tandem Access Controller
`~
`I
`TAC receives packets.
`
`VoIP Voice Packet, FAX
`Packet, PPP Packets
`(from Dial-up Modems)
`
`Send to
`appropriate
`Protocol
`Conversion
`subsystems.
`
`Assemble Signalling and Control
`Message (from Packets).
`
`VoIP H.323
`Process VoIP
`~ntrol messages ........ _c_o_n_tr_o_I M_ess_a_g_e __ c;._
`
`UIS Provisioning Message
`
`Call Control
`Messages
`
`UIS Control
`Message
`
`Invalid
`Database
`Request
`
`Invalid Call
`Control
`Request
`
`Perform function
`(e.g. dial a call)
`
`Database
`Updated
`
`Send acknowledgement
`message to UIS.
`
`Perform invalid
`message analysis
`and security check.
`
`Acronyms
`PPN ·Public Phone Number allocated by oneCloud (known to public,
`on business cards, etc., rings oneCloud).
`LPN • Local Phone Number from local telco ( rings user's phone but
`is only known to oneCloud and local telco).
`UIS· User Interaction System • web site user Interfaces with in
`Of'derto control phone features.
`TAC ·Tandem Access Controller· System that directly accesses
`thePSTN.
`
`~\ G,. 4
`
`
`
`YMAX CORPORATION v. FOCAL IP, LLC
`FOCAL IP, LLC EX2044 - 17
`Application No. 09/565,565
`IPR2016-01258
`
`

`

`Inbound Call (to Subscriber)
`
`Box 1
`
`Start.
`
`Box 2
`
`Receive Incoming Call
`Request (SS?) from PSTN
`Tandem Office.
`
`Box 3
`
`Format Message: Incoming Call
`Request (including called PPN,
`caller ID, channel#, etc.)
`
`Box 4
`
`Look up Galling and Called
`Parties in Database.
`
`Box 5
`
`>--N_o __ -'( Refuse call.)
`
`Box 6
`
`Box 7
`
`Look up Subscriber specified parameters
`in database. Determine if additional
`information is required from caller.
`
`Box 9
`
`Box 8
`
`IVA Subsystem
`obtains information
`>-Y_e_s _____ -.(e.g. collect password
`from Caller, etc.) .
`
`......-~-~~----~...-1 No
`
`Determine outbound calling number : Look
`up Subscriber Conditional Call Forward
`information (e.g. time-of-day, day-of-week,
`caller ID, caller password, etc.).
`
`Box 10
`
`Send Call Request (SS?) to
`PSTN Tandem.
`
`Box 11
`
`Yes
`
`Yes
`
`Box 12
`
`Box 13
`
`Connect this outbound call to
`original inbound call.
`
`Box 14
`
`f\ b· ~
`
`Done.
`
`Box 15
`
`YMAX CORPORATION v. FOCAL IP, LLC
`FOCAL IP, LLC EX2044 - 18
`Application No. 09/565,565
`IPR2016-01258
`
`

`

`Outbound
`
`Call (from Subscriber)
`
`v -, ()._ r "' () 'V' e.
`Dse....r ~oe~
`0 ff-{("\,, C> Cl¥..,,
`o~ ?~oV'e
`
`Subscriber enters or clicks on
`Outbound Called Number at UIS
`and indicates which Subscriber
`number call is to be placed from
`(e.g. cell or home number).
`
`UIS Formats and Sends a
`CallAndConnect Message to TAC
`
`TAC places call
`to Subscriber.
`
`Send Message to UIS -
`Subscriber Phone Not
`Anxwering.
`
`No
`
`~~ \N ~ \o..c.e~
`cc...\\ ,-"' C.OY\ l[W\ 't 10)'1~
`'(V\0...'V\ ..... e. ("'
`
`Yes
`
`TAC places call to
`outbound number and
`connects the two .
`
`Done.
`
`YMAX CORPORATION v. FOCAL IP, LLC
`FOCAL IP, LLC EX2044 - 19
`Application No. 09/565,565
`IPR2016-01258
`
`

`

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`24
`
`25
`
`YMAX CORPORATION v. FOCAL IP, LLC
`FOCAL IP, LLC EX2044 - 20
`Application No. 09/565,565
`IPR2016-01258
`
`

`

`ISP Dial-up
`)
`.... CO Trunks
`
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`
`Dial-Up
`Modem
`
`"-.FAX & Modem/
`"-. Calls
`
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`24
`
`25
`
`YMAX CORPORATION v. FOCAL IP, LLC
`FOCAL IP, LLC EX2044 - 21
`Application No. 09/565,565
`IPR2016-01258
`
`