Case 6:20-cv-00267-ADA Document 1-2 Filed 04/02/20 Page 1 of 11
`Case 6:20-cv-00267-ADA Document 1-2 Filed 04/02/20 Page 1 of 11
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`EXHIBIT 2
`EXHIBIT 2
`
`

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`Case 6:20-cv-00267-ADA Document 1-2 Filed 04/02/20 Page 2 of 11
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`Voip-Pal.com, Inc. v. Facebook, Inc.,
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`EXHIBIT 2
`The WhatsApp System
`
`The WhatsApp System routes a communication in a packet switched communication system between a
`first participant device associated with a first participant and a second participant device associated with a
`second participant, the first and second participant devices being associated with first and second network
`elements.
`
`The first participant device and the second participant device each comprise a mobile device running a
`version of the WhatsApp application. These mobile devices are coupled to a network of servers and
`gateways controlled by WhatsApp. The WhatsApp System consists of multiple servers in clusters each
`connected to multiple mobile devices and networked via local and wide area networks. The WhatsApp
`System allows a mobile device running the WhatsApp application to send a communication to another
`mobile device that is also running the WhatsApp application.
`
`
`
`
`Patent 10,218,606
`
`1. A method for routing
`communications in a packet
`switched communication system
`between a first participant device
`associated with a first participant
`and a second participant device
`associated with a second
`participant, the first and second
`participant devices being
`associated with first and second
`network elements of the
`communication system,
`respectively, the method
`comprising:
`
`1
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`

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`Case 6:20-cv-00267-ADA Document 1-2 Filed 04/02/20 Page 3 of 11
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`Voip-Pal.com, Inc. v. Facebook, Inc.,
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`https://play.google.com/store/apps/details?id=com.whatsapp
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`
`
`2
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`

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`Case 6:20-cv-00267-ADA Document 1-2 Filed 04/02/20 Page 4 of 11
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`Voip-Pal.com, Inc. v. Facebook, Inc.,
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`https://apps.apple.com/us/app/whatsapp-messenger/id310633997
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`
`
`3
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`

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`Case 6:20-cv-00267-ADA Document 1-2 Filed 04/02/20 Page 5 of 11
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`Voip-Pal.com, Inc. v. Facebook, Inc.,
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`The WhatsApp System includes processing by the mobile application, running on the mobile device as
`well as processing by one or more WhatsApp servers. One or more of the processors on the mobile
`device receives an input from the user to select the second participant. The user input, which may consist
`of a partial name or a partial number input into the contact list search box, and/or an input on a touch
`screen displaying contacts constitutes the second participant identifier. The first participant is registered
`with WhatsApp and has a WhatsApp username and phone number, which may constitute a first
`participant identifier.
`
`https://www.wikihow.tech/Find-Someone-on-WhatsApp
`
`receiving, by at least one
`processor, a second participant
`identifier associated with the
`second participant device, in
`response to initiation of a
`communication from the first
`participant device to the second
`participant device, the first
`participant device being associated
`with a first participant identifier;
`
`
`4
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`Case 6:20-cv-00267-ADA Document 1-2 Filed 04/02/20 Page 6 of 11
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`Voip-Pal.com, Inc. v. Facebook, Inc.,
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`
`https://faq.whatsapp.com/en/android/28000016
`
`
`
`
`5
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`

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`Case 6:20-cv-00267-ADA Document 1-2 Filed 04/02/20 Page 7 of 11
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`Voip-Pal.com, Inc. v. Facebook, Inc.,
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`One or more processors on the mobile device access data stored on the mobile device and/or data stored
`on a WhatsApp server to locate the contact list for the first participant. This information is specific to the
`first participant and constitutes at least part of the first participant profile.
`
`
`One or more processors on the mobile device process the selection of a user by and retrieve a WhatsApp
`username associated with the displayed information. When the user enters a partial name or partial
`number into the search box, a list of matching contacts is displayed. When the user selects a contact by
`tapping on the touch screen a contact is selected. Each of the listed contacts is a WhatsApp user and has
`an associated username and phone number. The WhatsApp username and/or phone number of a selected
`contact constitutes the new second participant identifier.
`
`
`causing the at least one processor
`to access at least one memory
`storing a first participant profile
`identifying at least one first
`participant attribute;
`
`processing the second participant
`identifier and the at least one first
`participant attribute, using the at
`least one processor, to produce a
`new second participant identifier
`based on at least one match
`between the second participant
`identifier and the at least one first
`participant attribute;
`
`
`processing the new second
`participant identifier, using the at
`least one processor, to determine
`whether the second network
`element is the same as the first
`network element;
`
`
`when the second network element
`is determined to be the same as the
`first network element, producing a
`
`
`
`https://faq.whatsapp.com/en/android/28000016
`
`The WhatsApp System determines if the first participant device is associated with the same network
`element as the second network element. For example, the first participant device and the second
`participant device may be serviced by the same node or cluster or a different node or cluster. On
`information and belief, the WhatsApp System is a large scale service that operates on multiple distributed
`notes coupled to each other over a wide area network.
`
`
`“What has hundreds of nodes, thousands of cores, hundreds of terabytes of RAM, and hopes to
`serve the billions of smartphones that will soon be a reality around the globe? The
`Erlang/FreeBSD-based server infrastructure at WhatsApp.”
`
`
`http://highscalability.com/blog/2014/2/26/the-whatsapp-architecture-facebook-bought-for-19-billion.html
`
`The WhatsApp System produces a routing message that identifies an address associated with the first
`network element when the first and second network elements are the same.
`
`
`6
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`Case 6:20-cv-00267-ADA Document 1-2 Filed 04/02/20 Page 8 of 11
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`Voip-Pal.com, Inc. v. Facebook, Inc.,
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`Routing of WhatsApp messages and/or calls between mobile devices can take place on the same node or
`may require that messages and/or calls go between nodes.
`
`
`The WhatsApp System produces a routing message that identifies an address associated with the second
`network element when the first and second network elements are not the same.
`
`Routing of WhatsApp messages and/or calls between mobile devices can take place on the same node or
`may require that messages and/or calls go between nodes.
`
`
`The WhatsApp System attempts to establish the communication (e.g., a WhatsApp message and/or call)
`from the first participant device to the second participant device based on the routing message.
`
`
`Contacts can be added to the WhatsApp System by adding a contact using a PSTN number.
`
`
`routing message identifying a first
`network address associated with
`the first network element, using the
`at least one processor; and
`
`when the second network element
`is determined not to be the same as
`the first network element,
`producing a routing message
`identifying a second network
`address associated with the second
`network element, using the at least
`one processor;
`
`wherein the packet switched
`communication system attempts to
`establish the communication from
`the first participant device to the
`second participant device based on
`at least one network address
`identified in the routing message.
`
`8. The method of claim 1 further
`comprising:
`(a) updating a database to cause at
`least one user-specific first
`participant attribute to be modified,
`
`
`7
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`Case 6:20-cv-00267-ADA Document 1-2 Filed 04/02/20 Page 9 of 11
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`Voip-Pal.com, Inc. v. Facebook, Inc.,
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`(b) wherein the second participant
`identifier identifies a device in
`communication with a public
`switched telephone network
`(PSTN),
`
`
`https://faq.whatsapp.com/en/android/21082107
`
`The WhatsApp contact identified by the second participant identifier identifies a mobile device that has a
`PSTN number associated with it. The second participant device is in communication with the PSTN.
`
`
`\
`
`Finding your favorites/contacts list
`
`WhatsApp quickly and easily recognizes which of your contacts are using WhatsApp by accessing your
`phone's address book.
`
`8
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`

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`Case 6:20-cv-00267-ADA Document 1-2 Filed 04/02/20 Page 10 of 11
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`Voip-Pal.com, Inc. v. Facebook, Inc.,
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`To find your favorites/contacts go to the Chats tab and tap the New chat icon.
`
`If you can't see your contacts:
`
` Make sure that your contacts are using WhatsApp.
` Make sure that you've saved your contacts' phone numbers in your phone's address book.
`If they use a foreign phone number, use the full international format.
`
`(c) wherein the communication
`comprises a video or audio call,
`
`
`https://faq.whatsapp.com/en/android/20970403/
`
`The WhatsApp system allows both video and audio calls.
`
`
`
`https://faq.whatsapp.com/en/android/26000026
`
`The WhatsApp System forms a private network that provides communication services to WhatsApp
`users.
`
`
`
`
`(d) wherein the packet switched
`communication system, including
`the first and second network
`elements, form a private network
`operably configured to provide
`communication services to
`subscribers thereof, and
`
`
`9
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`

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`Case 6:20-cv-00267-ADA Document 1-2 Filed 04/02/20 Page 11 of 11
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`Voip-Pal.com, Inc. v. Facebook, Inc.,
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`
`https://www.whatsapp.com/
`
`One or more servers operated by WhatsApp constitute a call controller that operate to establish the video
`or audio call in response to the routing message.
`
`
`
`
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`(e) wherein the at least one
`network element of the
`communication system comprises a
`call controller operable to establish
`the video or audio call to the
`second participant device in
`response to the routing message.
`
`
`10
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