`
`No.
`
`Limitation
`
`lp
`
`la
`
`lb
`
`lc
`
`ld
`
`le
`
`lf
`
`lg
`
`lh
`
`1i
`
`An information handling system comp1ising:
`
`a first local area network ('LAN');
`
`a second LAN;
`
`a wide area network ('WAN') coupling the first LAN to the second
`LAN;
`
`a third LAN coupled to the first and second LANs via the WAN;
`
`a first telecommunications device coupled to the first LAN;
`
`a plurality of telecommunications extensions coupled to the second
`LAN;
`
`the first LAN including first circuitiy for enabling a user of the first
`telecommunications device to observe a list of the plurality of
`telecommunications extensions;
`
`the first LAN including second circuitry for automatically calling one
`of the plurality of telecommunications extensions in response to the
`user selecting one of the plurality of telecommunications extensions
`from the observed list, wherein the list of the plurality of
`telecommunications extensions is stored in a server in the second
`LAN, and is accessed by the first circuitiy across the WAN; and
`
`a plurality of telecommunications extensions coupled to the third
`LAN, the first LAN including circuitiy for enabling the user to select
`between obse1ving the list of the plurality of telecommunications
`extensions coupled to the second LAN or observing a list of the
`plurality of telecommunications extensions coupled to the third LAN.
`
`1
`
`RingCentral Ex-1031 , p. 1
`RingCentral v. Estech
`IPR2021-0057 4
`
`
`
`No.
`
`Limitation
`
`2
`
`3
`
`4
`
`5
`
`6
`
`7
`
`8p
`
`8a
`
`8b
`
`The system as recited in claim 1, wherein communication among the
`first LAN, second LAN, and WAN uses an IP protocol.
`
`The system as recited in claim 2, wherein the list of the plurality of
`telecommunications extensions is displayed to the user of the first
`telecommunications device.
`
`The system as recited in claim 3, wherein the first telecommunications
`device is an IP telephone having a display for showing the list of the
`plurality of telecommunications extensions, wherein the second
`circuitiy includes a key for enabling the user to tacitly selecting one of
`the plurality of telecommunications extensions from the displayed list.
`
`The system as recited in claim 4, wherein the tactile selection of one of
`the plurality of telecommunications extensions from the displayed list
`by the user results in an initiation of a call from the first
`telecommunications device to the selected one of the plurality of
`telecommunications extensions across theW AN.
`
`The system as recited in claim 1, wherein the list of the plurality of
`telecommunications extensions is played as audio to the user of the
`first telecommunications device.
`
`The system as recited in claim 1, wherein the first telecommunications
`device includes circuitry for enabling the user to scroll through the
`displayed list of the plurality of telecommunications extensions.
`
`An information handling system comp1ising:
`
`a first local area network ("LAN") operating under an IP protocol;
`
`a first IP telephone coupled to the first LAN, the first IP telephone
`having a display and a set of keys for enabling a user to enter inputs;
`
`2
`
`RingCentral Ex-1031 , p. 2
`RingCentral v. Estech
`IPR2021-0057 4
`
`
`
`No.
`
`8c
`
`8d
`
`8e
`
`8f
`
`8g
`
`8h
`
`9
`
`10
`
`11
`
`Limitation
`
`a second LAN operating under the IP protocol;
`
`second and third telephone extensions coupled to the second LAN;
`
`a wide area network ("WAN") operating under the IP protocol
`coupling the first LAN to the second LAN;
`
`a third LAN coupled to the first and second LANs via the WAN;
`
`the first LAN including first circuitiy for enabling a user of the first IP
`telephone to view a list including the second and third telephone
`extensions, wherein the list is stored in a server in the second LAN,
`and is accessed by the first circuitry across the WAN; and
`
`a plurality of telephone extensions coupled to the third LAN, the first
`LAN including circuitry for enabling the user to select between
`viewing the list of the telephone extensions coupled to the second
`LAN or viewing a list ofthe plurality of telephone extensions coupled
`to the third LAN.
`
`The system as recited in claim 8, further comprising: the first LAN
`including second circuitiy for automatically calling the second
`telephone extension in response to the user selecting the second
`telephone extension from the viewed list.
`
`The system as recited in claim 9, wherein selection of the second
`telephone extension from the viewed list by the user is accomplished
`by selection of one of the set of keys.
`
`The system as recited in claim 10, wherein the selection of one of the
`set of keys results in an initiation of a call from the first IP telephone
`to the second telephone extension across theW AN.
`
`3
`
`RingCentral Ex-1031 , p. 3
`RingCentral v. Estech
`IPR2021-0057 4
`
`
`
`No.
`
`12
`
`Limitation
`
`The system as recited in claim 8, wherein the first IP telephone
`includes circuitry for enabling the user to scroll through the displayed
`list.
`
`17p
`
`A method comprising the steps of:
`
`17a
`
`receiving a first touch input from a user on an IP telephone that is
`networked into a first LAN operating under an IP protocol;
`
`17b
`
`in response to receipt of the first touch input, displaying on a display
`on the IP telephone a first list including second and third LAN s
`coupled to the first LAN, wherein the second and third LANs operate
`under the IP protocol, wherein the first, second, and third LANs are
`coupled via a WAN;
`
`17c
`
`receiving a second touch input from the user on the IP telephone;
`
`17d
`
`in response to receipt of the second touch input, displaying on the
`display on the IP telephone a second list of telephone destinations
`accessible from the second LAN;
`
`17e
`
`receiving a third touch input from the user on the IP telephone;
`
`17f
`
`17g
`
`in response to receipt of the third touch input, automatically dialing
`one of the telephone destinations accessible from the second LAN for
`a communications connection between the one of the telephone
`destinations and the IP telephone
`
`wherein the step of displaying on the display on the IP telephone the
`second list further includes the steps of: sending a message from the
`first LAN to the second LAN requesting the second list; and
`
`17h
`
`receiving the second list from the second LAN to the first LAN;
`
`4
`
`RingCentral Ex-1031 , p. 4
`RingCentral v. Estech
`IPR2021-0057 4
`
`
`
`No.
`
`Limitation
`
`17i
`
`receiving a fourth touch input from the user on the IP telephone; and
`
`in response to receipt of the fomth touch input, displaying on the
`display on the IP telephone a third list of telephone destinations
`accessible from the third LAN, wherein the step of displaying on the
`display on the IP telephone the third list fmther includes the steps of:
`sending a message from the first LAN to the third LAN requesting the
`third list; and receiving the third list from the third LAN to the first
`LAN.
`
`The method as recited in claim 17, before the step of receiving the
`second touch input, fmther comprising the steps of: receiving a fifth
`touch input from the user on the IP telephone; and in response to
`receipt of the fifth touch input, scrolling through the first list.
`
`The method as recited in claim 18, before the step of receiving the
`third touch input, further comprising the steps of: receiving a sixth
`touch input from the user on the IP telephone; and in response to
`receipt of the sixth touch input, scrolling through the second list.
`
`17j
`
`18
`
`19
`
`5
`
`RingCentral Ex-1031 , p. 5
`RingCentral v. Estech
`IPR2021-0057 4
`
`