Prior art — US Patent 7606156

Here is an analysis of the most relevant prior art for US patent 7606156, based on its citations and potential anticipation under 35 U.S.C. § 102. The analysis is based on information available as of April 26, 2026.

US Patent 7606156: Residential Communications Gateway (RCG)

Title: Residential communications gateway (RCG) for broadband communications over a plurality of standard POTS lines, with dynamic allocation of said bandwidth, that requires no additional equipment or modifications to the associated class 5 offices or the PSTN at large
Publication Date: October 20, 2009
Filing Date: October 14, 2003

Summary of Claims (US7606156):
The patent generally claims a residential communications gateway (RCG) device that connects to at least one Plain Old Telephone Service (POTS) line without requiring special equipment at the Class 5 office. The RCG provides multiple telephone lines and an always-on data connection, dynamically allocating bandwidth between voice and data, prioritizing voice traffic. A significant aspect is the use of a wireless interface (e.g., 802.11b/g) to form a multilink Point-to-Point Protocol (PPP) bundle using the POTS lines of multiple RCGs to achieve broadband data rates, or to connect to a neighborhood access point for broadband. It also includes features like speakerphone, video telephone capabilities, and remote upgradability.

Cited Prior Art Analysis:

1. US 2002/0054597 A1 to O'Toole et al.

Full Citation: US 2002/0054597 A1, "Method and apparatus for providing residential communication services" by O'Toole et al.
Publication/Filing Date: Published May 9, 2002; Filed April 25, 2001.
Brief Description: This application describes a broadband residential gateway that provides high-speed data access and voice services, including Voice over IP (VoIP), to subscribers over existing telephone wiring (POTS lines). It uses DSL technology to achieve broadband speeds and has features like an integrated modem, Ethernet, and potentially a wireless connection. The system aims to provide enhanced services without requiring changes to the central office by deploying equipment at the local loop.
Potential Anticipated Claim(s) (under 35 U.S.C. § 102):
- Claims 1, 10, 19 (Independent claims related to the RCG device and its connection to POTS): This reference describes a residential gateway providing voice and data over POTS lines. While it uses DSL, the fundamental concept of a device at the residence enhancing POTS lines for data and voice is present.
- Claims 2, 11 (Providing multiple telephone numbers/lines): The O'Toole reference discusses providing multiple virtual lines for subscribers.
- Claims 3, 12, 20 (Dynamic bandwidth allocation, voice prioritization): The reference discusses dynamic allocation of bandwidth for different services, prioritizing voice traffic (e.g., VoIP) over data to ensure Quality of Service (QoS).
- Claims 4, 13, 22 (Wireless interface, home networking): The device described can include a wireless interface (e.g., 802.11) for local area networking within the residence.
- Claims 5, 14, 21 (Computer connectivity, e.g., Ethernet, USB): The gateway explicitly includes Ethernet and USB ports for connecting to computers.
- Claims 6, 15 (VoIP services): The core of the voice services is VoIP.
- Claims 7, 16 (Always-on data connection): The gateway is designed to provide an always-on data connection.
- Claims 8, 17, 25 (Remote upgradability): The system can be remotely provisioned and updated.

2. US 5,909,445 to Schneider

Full Citation: US 5,909,445, "Apparatus and method for providing an integrated communications gateway" by Schneider.
Publication/Filing Date: Published June 1, 1999; Filed November 27, 1996.
Brief Description: This patent describes an integrated communications gateway that provides various communication services (e.g., voice, data, video) over a single access line, typically to a residential or small business user. It integrates functions such as a modem, router, and PBX-like features, allowing users to make phone calls, access the Internet, and manage various communications through a single device. The gateway processes different types of traffic and routes them appropriately.
Potential Anticipated Claim(s) (under 35 U.S.C. § 102):
- Claims 1, 10, 19 (RCG device, voice/data over POTS): The general concept of an integrated residential gateway handling voice and data over a single access line (like POTS) is present.
- Claims 2, 11 (Multiple telephone numbers/lines): The gateway can emulate multiple lines.
- Claims 3, 12, 20 (Dynamic bandwidth allocation, voice prioritization): The gateway includes mechanisms for prioritizing time-sensitive traffic like voice.
- Claims 5, 14, 21 (Computer connectivity): The patent describes interfaces for connecting computers and other devices.
- Claims 6, 15 (VoIP services): It handles voice communications, including packetized voice.
- Claims 7, 16 (Always-on data connection): The gateway can maintain a continuous connection.

3. US 6,061,392 to Bremer et al.

Full Citation: US 6,061,392, "Method and apparatus for providing packetized multimedia communication services over an existing local access network" by Bremer et al.
Publication/Filing Date: Published May 9, 2000; Filed June 16, 1997.
Brief Description: This patent discloses a system and method for delivering packetized multimedia communication services, including voice, data, and video, over existing local access networks, such as POTS lines. It involves a customer premises equipment (CPE) that interfaces with the POTS line and performs packetization/depacketization for multimedia traffic, and a central office component. The system aims to leverage existing infrastructure for new services.
Potential Anticipated Claim(s) (under 35 U.S.C. § 102):
- Claims 1, 10, 19 (RCG device, voice/data over POTS): The core idea of using customer premises equipment to provide packetized voice and data services over existing POTS lines is a central theme.
- Claims 3, 12, 20 (Dynamic bandwidth allocation, voice prioritization): The system handles multimedia traffic, implying mechanisms for prioritizing real-time services like voice and video.
- Claims 6, 15 (VoIP services): It explicitly mentions packetized voice.
- Claim 26 (Video telephone services): The patent refers to multimedia communication services, which include video.

4. US 6,167,095 to Furukawa et al.

Full Citation: US 6,167,095, "Digital telephone having a packet communication function" by Furukawa et al.
Publication/Filing Date: Published December 26, 2000; Filed November 19, 1998.
Brief Description: This patent describes a digital telephone that can communicate using both traditional circuit-switched telephone lines (PSTN) and packet communication networks (e.g., IP networks). It allows for switching between these communication modes and integrating them within a single terminal device, including handling voice as packet data.
Potential Anticipated Claim(s) (under 35 U.S.C. § 102):
- Claims 1, 10, 19 (RCG device providing voice/data functions): The concept of a user-end device integrating traditional telephone functions with packet communication is relevant.
- Claims 3, 12, 20 (Dynamic bandwidth allocation, voice prioritization): Implied by handling both circuit-switched and packet-switched voice, requiring management of resources for real-time communication.
- Claims 6, 15 (VoIP services): The device explicitly has a packet communication function for voice.

5. US 6,307,839 to Gerszbert et al.

Full Citation: US 6,307,839 B1, "System and method for providing enhanced telecommunication services using customer premises equipment" by Gerszbert et al.
Publication/Filing Date: Published October 23, 2001; Filed April 14, 2000.
Brief Description: This patent describes a system where customer premises equipment (CPE) is used to provide enhanced telecommunication services, including voice and data, over existing single twisted-pair telephone lines (POTS). The CPE can convert voice signals into packetized data for transmission over a data network and handle various enhanced calling features without requiring significant central office upgrades.
Potential Anticipated Claim(s) (under 35 U.S.C. § 102):
- Claims 1, 10, 19 (RCG device, voice/data over POTS without CO modifications): This reference directly addresses providing enhanced services over existing POTS lines using CPE, specifically mentioning the avoidance of central office upgrades, which is a key feature of US7606156.
- Claims 2, 11 (Multiple telephone numbers/lines): The CPE can support multiple virtual lines and calling features.
- Claims 3, 12, 20 (Dynamic bandwidth allocation, voice prioritization): The system manages bandwidth for integrated voice and data services, with an emphasis on quality for voice.
- Claims 4, 13 (Wireless interface for home networking): The CPE can include interfaces for local networking.
- Claims 5, 14, 21 (Computer connectivity): Provides interfaces for connecting computers.
- Claims 6, 15 (VoIP services): Voice is handled as packetized data.
- Claims 7, 16 (Always-on data connection): The system can maintain a continuous data connection.
- Claims 8, 17, 25 (Remote upgradability/configuration): The CPE can be remotely configured and managed.

6. US 6,373,860 B1 to O'Toole et al.

Full Citation: US 6,373,860 B1, "Broadband residential gateway" by O'Toole et al.
Publication/Filing Date: Published April 16, 2002; Filed December 30, 1998.
Brief Description: This patent describes a broadband residential gateway that provides voice and data communications over a broadband access line (e.g., DSL, cable modem). It integrates functions such as a modem, router, and VoIP gateway, supporting multiple voice channels and data interfaces (Ethernet, USB, wireless LAN). The gateway aims to deliver advanced communication services to residential subscribers.
Potential Anticipated Claim(s) (under 35 U.S.C. § 102):
- Claims 1, 10, 19 (RCG device, voice/data over a broadband connection): This patent describes a residential gateway providing integrated voice and data services.
- Claims 2, 11 (Multiple telephone numbers/lines): The gateway supports multiple voice channels.
- Claims 3, 12, 20 (Dynamic bandwidth allocation, voice prioritization): It manages different types of traffic for QoS.
- Claims 4, 13, 22 (Wireless interface, home networking): The device includes a wireless LAN interface (e.g., 802.11).
- Claims 5, 14, 21 (Computer connectivity): Provides Ethernet and USB interfaces.
- Claims 6, 15 (VoIP services): It acts as a VoIP gateway.
- Claims 7, 16 (Always-on data connection): Provides continuous data access.
- Claims 8, 17, 25 (Remote upgradability/configuration): The gateway is designed for remote configuration and management.
- Claim 26 (Video telephone services): It mentions support for video conferencing.

Overall Assessment of Prior Art Relevance:

The most relevant prior art appears to be US 2002/0054597 A1 and US 6,307,839 B1 (Gerszbert et al.), both of which focus on providing enhanced residential communication services (voice, data, sometimes video) over existing POTS lines using customer premises equipment without requiring central office modifications. This is a critical distinction that US7606156 emphasizes. While US2002/0054597 A1 specifically mentions DSL, the core idea of a CPE improving POTS capabilities for voice and data is very close.

The unique aspect of US7606156, which these prior arts might not fully anticipate, is the multilink PPP bundle over a plurality of POTS lines from multiple RCGs via a wireless interface to achieve aggregated broadband speeds, as described in claims 9, 18, and 23. While individual prior arts may teach aspects of residential gateways, VoIP, wireless networking, and even dynamic bandwidth allocation, the specific combination of using a wireless ad-hoc network between multiple residential gateways to aggregate multiple standard POTS lines into a single, higher-bandwidth multilink PPP connection for a requesting RCG appears to be a distinguishing feature that would require a detailed claim-by-claim analysis against each piece of prior art.