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`Case 6:21-cv-00667-ADA Document 41-3 Filed 04/08/22 Page 1 of 284
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`EXHIBIT 2
`EXHIBIT 2
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`

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`(19) United States
`(12) Patent Application Publication (10) Pub. No.: US 2004/0022237 A1
`(43) Pub. Date:
`Feb. 5, 2004
`Elliott et al.
`
`US 2004.0022237A1
`
`(54) VOICE OVER DATA
`TELECOMMUNICATIONS NETWORK
`ARCHITECTURE
`
`(75) Inventors: Isaac K. Elliott, Broomfield, CO (US);
`Steven P. Higgins, Colorado Springs,
`CO (US); Andrew John Dugan,
`Superior, CO (US); Jon Peterson,
`Boulder, CO (US); Robert L.
`Hernandez, Longmont, CO (US); Rick
`D. Steele, Longmont, CO (US); Bruce
`W. Baker, Erie, CO (US); Rich
`Terpstra, Louisville, CO (US);
`Jonathan S. Mitchell, Superior, CO
`(US); Jin-Gen Wang, Westminster, CO
`(US); Harold Stearns, Erie, CO (US);
`Eric Zimmerer, Westminster, CO (US);
`Ray Waibel, Arvada, CO (US); Kraig
`Owen, Boulder, CO (US); Shawn M.
`Lewis, Southboro, MA (US)
`Correspondence Address:
`MERCHANT & GOULD PC.
`P.O. Box 2903
`Minneapolis, MN 55402-0903 (US)
`(73) Assignee: Level 3 Communications, Inc., Broom
`field, CO
`(21) Appl. No.:
`10/366,061
`(22) Filed:
`Feb. 12, 2003
`Related U.S. Application Data
`(63) Continuation of application No. 09/197,203, filed on
`Nov. 20, 1998, now Pat. No. 6,614,781.
`
`Publication Classification
`
`(51) Int. Cl." ..................................................... H04L 12/66
`(52) U.S. Cl. .............................................................. 370/356
`
`(57)
`
`ABSTRACT
`
`The present invention describes a System and method for
`communicating Voice and data over a packet-Switched net
`work that is adapted to coexist and communicate with a
`legacy PSTN. The system permits packet Switching of voice
`calls and data calls through a data network from and to any
`of a LEC, a customer facility or a direct IP connection on the
`data network. The System includes Soft Switch Sites, gateway
`Sites, a data network, a provisioning component, a network
`event component and a network management component.
`The system interfaces with customer facilities (e.g., a PBX),
`carrier facilities (e.g., a LEC) and legacy signaling networks
`(e.g., SS7) to handle calls between any combination of
`on-network and off-network callers.
`The Soft Switch SiteS provide the core call processing for the
`Voice network architecture. The Soft Switch Sites manage the
`gateway Sites in a preferred embodiment, using a protocol
`such as the Internet Protocol Device Control (IPDC) proto
`col to request the Set-up and tear-down of calls. The gateway
`Sites originate and terminate calls between calling parties
`and called parties through the data network. The gateway
`Sites include network acceSS devices to provide access to
`network resources. The data network connects one or more
`of the Soft Switch Sites to one or more of the gateway Sites.
`The provisioning and network event component collects call
`events recorded at the Soft Switch sites. The network man
`agement component includes a network operations center
`(NOC) for centralized network management.
`
`14
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`Signaling
`Network
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`Case 6:21-cv-00667-ADA Document 41-3 Filed 04/08/22 Page 2 of 284
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`Network Management
`Component
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`18
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`Case 6:21-cv-00667-ADA Document 41-3 Filed 04/08/22 Page 3 of 284
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`Case 6:21-cv-00667-ADA Document 41-3 Filed 04/08/22 Page 110 of 284
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