Board of Directors
Richard Shockey – SIP Forum Chairman of the Board – Shockey Consulting
Richard Shockey is an internationally recognized expert on Data Communications, Voice over IP Technology, Numbering and Signaling, and is currently the Principal of Shockey Consulting, a private firm advising telecommunications companies, national regulatory authorities and the investment community on any number of issues related to Next Generation Real Time Communications products and services. Mr. Shockey also currently serves as Chairman of the Board of Directors of the SIP Forum.
Mr. Shockey has been a member of the United States Federal Communications Commission’s Communications Security, Reliability and Interoperability Council (CSRIC), an FCC advisory council tasked with advising the federal agency regarding best practices and practical actions pertaining to the security, reliability, and interoperability of communications systems.
Mr Shockey has been recently reappointed a member of the Federal Communications Commission North American Numbering Council [NANC]. The NANC is the US governments principal technical advisory committee on issues surrounding the use of telephone numbers and telephone number related issues in the United States.
Mr. Shockey was a founder and Co-Chair of the Internet Engineering Task Force ENUM Work Group and is an author of several IETF RFC’s Active in IETF affairs since 1998 he also participated in numerous other WG including FAX, SIP, SIPPING, SPEERMINT, SIMPLE, and its management nominating committee NOMCOM.
Mr. Shockey was formerly Director & Distinguished Member of the Technical Staff at NeuStar, Inc. based in Suburban Washington, D.C.
Allyson Blevins – TNS
Allyson Blevins is Head of Regulatory & Industry Relations for Transaction Network Services (TNS), where she leads the company’s engagement on regulatory, policy, and industry matters affecting the telecommunications sector.
With nearly three decades of telecommunications experience, Allyson has developed deep expertise in numbering policy, local number portability, interconnection, industry standards, and regulatory affairs. Throughout her career, she has worked closely with service providers, regulators, and industry organizations to address complex operational and policy issues and support the industry’s ongoing evolution.
Throughout her career, Allyson has been a trusted voice in industry policy and standards discussions, holding leadership positions with the ATIS Industry Numbering Committee (INC) and the Number Portability Industry Forum (NPIF), and serving on the North American Numbering Council (NANC).
A frequent speaker at industry conferences, regulatory meetings, and webinars, Allyson has presented at events hosted by the National Association of Regulatory Utility Commissioners (NARUC), the Communications Fraud Control Association (CFCA), and other telecommunications organizations. She regularly shares perspectives on numbering policy, number portability, regulatory developments, and emerging issues impacting the telecommunications industry.
Keith Buell – Numeracle
In Keith’s professional career, he has worked on robocall policy from a variety of perspectives. As assistant general counsel at Verizon, Keith was a litigator on various telecom fraud cases involving the company, including an auto dialer case where the opposing party sequentially dialed every 8YY number in the country. At Sprint (and subsequently T-Mobile after the merger), he was the lead regulatory attorney on robocall policy and worked with his counterparts at the other carriers, as well as with the Federal Communications Commission, trade associations, and the SIP Forum.
He also worked at a major international gateway provider on robocall policy, gaining useful insights into international battles against robocalls as well as the ins and outs of international IP call routing and technologies. Keith’s work at the Federal Communications Commission in 2022-2023 focused on numbering issues, including number rotation, number assignment, and number exhaust.
Keith now serves as general counsel and head of global public policy at Numeracle with a focused mission on implementing robust Know Your Customer polices and embedding identity information into electronic communications so the recipient knows with certainty who is contacting them.
David Casem – Telnyx
David Casem is Co-Founder and CEO of Telnyx, where he leads one of the most advanced global communications and AI infrastructure platforms in the market. Since founding Telnyx in 2009, David has built a full-stack platform that unifies carrier-grade communications, real-time connectivity, and AI-driven capabilities, giving businesses unprecedented control over how they build and scale conversational experiences. Telnyx’s ultra-low-latency architecture and developer-first tools power mission-critical communications for companies operating at global scale.
As a self-taught engineer and entrepreneur, David built the first iteration of a phone company using open source software, a few relationships and a license from the FCC. Telnyx is now a global software-defined telco whose problem domain includes identifying the best submarine cables to interconnect continents and understanding international regulatory systems to arbitrage the wireless spectrum.
David studied economics at Swarthmore College and splits his time between Telnyx’s offices in Chicago and Dublin.
Nick Degani – Reticulated Strategies LLC
Nick is the principal of Reticulated Strategies LLC, a telecom consulting firm, which he founded in 2021. He is also the Chief Strategist of the Digital Progress Institute, a think tank he co-founded that is dedicated to bridging the digital policy divide through bipartisan, incremental reform. And he is an adjunct faculty member of the Antonin Scalia School of Law at George Mason University, where he teaches a Communications Law class.
Nick spent more than 13 years at the Federal Communications Commission, serving as both Senior Counsel to FCC Chairman Ajit Pai and Acting General Counsel of the agency, with experience working on a wide variety of telecommunications matters, including wireline matters such as the Universal Service Fund and intercarrier compensation, wireless matters such as the FCC’s 5G FAST plan and the C-band spectrum auction, and consumer issues such as robocalling and 988. While at the FCC, he was detailed to the Committee on Energy and Commerce of the U.S. House of Representatives to work on, among other things, the 2012 Spectrum Act.
Before the FCC, he clerked on the U.S. Court of Appeals for the Sixth Circuit for Judge Jeffrey Sutton. He graduated magna cum laude from Yale University with a B.S. in Computer Science/Electrical Engineering and History in 2003, and he graduated cum laude from Harvard Law School in 2006.
Martin Dolly – AT&T
Martin Dolly is an AT&T Lead Member of Technical Staff, currently assigned to the Core & Government/Regulatory Standards organization. Martin has been with AT&T Bell Laboratories/AT&T Labs for 37 years, where his areas of expertise include security, signaling, and services, particularly Government Priority Services.
As a Technical Consultant in the Strategic Standards Division, Martin’s focus is on the development of necessary standards for LTE/IMS deployments, Security and Identity Management, IP carrier interconnection, IP-GETS/WPS, Public Safety, signaling control protocols, and IP Network Management controls. In this capacity, Martin represents AT&T’s interests on IP signaling, security and services issues in telecommunications standards bodies such as the Packet Technologies and Systems Committee of Service Committee (PTSC) of the Alliance for Telecommunications Industry Solutions (ATIS), Internet Engineering Task Force (IETF), NPSTC QoS and Security WG, 3rd Generation Partnership Project (3GPP) CT Protocol and SA3 Security groups, as well as Study Groups in the Telecommunication Standardization Sector of the International Telecommunications Union (ITU-T). In addition, Martin contributes to various government Cybersecurity activities, FCC TAC & CSRIC Cybersecurity, DHS/NCS NGN GETS Security, CTIA Cybersecurity WG, and DISA LTE Security Profile.
Martin was hired into AT&T Bell Laboratory on July 8th, 1985, at AT&T Microelectronics he was part of team that developed a radiation hardened Integrated Circuit for the US Navy. In the early 1990, Martin transferred from AT&T Microelectronics to AT&T communications in Holmdel, where he worked on SS7 protocol and standards. In this role, he was a major contributor to SS7 Network to Network Interconnection (NNI) effort in support of IS 41 & GSM MAP, 8YY, Calling Card, Operator Services and voice.
Martin has contributed to many of AT&T’s SIP deployments since 2000. He is co-author of 5 IETF RFCs and contributed to many others. He contributed to and lead efforts on ISUP to SIP interworking including those in 3GPP, i3 Forum, ITU and ATIS.
Currently Martin is a driving force behind IP Interconnection, co-chair of the ATIS-SIP Forum NNI Task Force where is also the editor and major contributor to the IP NNI Profile standard and . Martin is currently co-chair of the FCC Strike Force on Robo-calling, where he is a major contributor, as well as leader.
Henry Hayter – TransUnion
Henry Hayter serves as Senior Director, Trusted Call Solutions at TransUnion, and in his role is the head of TransUnion’s Caller ID Authentication products, which make up one pillar of TransUnion’s Trusted Call Solutions suite. Henry’s background spans 30 years of working in technical and business roles for telecom, big tech, startup, and consultation firms. Prior to joining TransUnion, Henry spent 20 years working in product management, strategy, and solutions engineering roles in enterprise mobile, voice, and messaging ecosystems. Henry has also worked for each of the top 3 mobile operators in the United States in various technical leadership roles.
Henry’s current responsibilities at TransUnion include business, technical, and regulatory oversight for all Call Authentication solutions. These solutions are comprised of in-band STIR/SHAKEN signing and verification solutions, STI-PA and STI-CA solutions, and out-of-band authentication solutions based on STIR that enable end-to-end authentication between Enterprises and Terminating Service Providers. Additionally, Henry is responsible for inbound and outbound contact center solutions designed to mitigate impersonations, account takeover fraud, and third-party scams. He participates in many industry focus groups designed to restore trust to the communications channel for enterprises and consumers alike.
Philip Linse – Lumen
Philip Linse, Director of Public Policy represents Lumen in various industry standards forums such as INC, SNAC, NGIIF, PTSC, IPNNI and as Co-chair of the FCC’s North American Numbering Council’s Contract Oversight Subcommittee as well as providing Lumen with policy consult on the technology transformation as the result of the ongoing transition to IP technology.
Mr. Linse’s background spans over 20 years in telecommunications consisting of, intercarrier and vendor contract negotiations, economic analysis and modeling, OSP engineering, and subject matter expert on network issues associated with interconnection, switching, signaling, and signaling databases. Philip currently serves on the board of directors with the Telecommunications History Group LLC. He also holds a Bachelors degree from the University of Northern Iowa.
Philip also developed network strategies and policies that directed the unbundling of Qwest’s networks pursuant to the Telecommunications Act of 1996. Philip began his career as an Outside Plant contract drafter in Montana and Loop Technology Planning Engineer for Pacific Bell in California.
In previous roles with CenturyLink (formerly Qwest), Philip represented Qwest in regulatory hearings, intercarrier contract negotiations, industry standards groups, and FCC NRIC focus groups as a subject matter expert on network issues associated with interconnection, switching, signaling, and signaling databases.
Lisa Marie Maxson – 10x People
Lisa Marie Maxson is the Founder and CEO of 10x People, LLC, a market-leading provider of cloud-based numbering solutions. A pioneer in telecom software, Lisa Marie has been at the leading edge of communication systems since graduating from the University of Kentucky in 1989 with a B.S. in Computer Science.
Following early foundational work at IBM, she seized the opportunities of telecom deregulation in 1996 to co-found Telecom Software Enterprises (TSE), where she served as the primary author of the industry’s NPAC CMIP Interface—a core standard continuously utilized for LNP from its inception to the present day. After TSE was acquired, she founded Transydian in 2004 to build critical custom software systems handling 800-number routing, roaming settlement charges, and number portability. In 2013, she spun those assets into 10x People, which now focuses heavily on streamlining manual numbering processes, managing authoritative data, and enabling compliance with modern IPES transitions.
Lisa Marie is heavily engaged in industry governance, currently serving on the ATIS Board of Directors and previously acting as a voting member on the FCC’s North American Numbering Council (NANC). In recognition of her entrepreneurial success and technological contributions, she was inducted into the University of Kentucky College of Engineering Hall of Distinction in 2016.
Christopher Oatway – Verizon
Chris Oatway is Associate General Counsel at Verizon with responsibility for cybersecurity policy as well as his company’s robocall mitigation project of restoring trust in voice communications. Prior to Verizon, Chris was an antitrust litigator at Covington & Burling in Washington, DC, and his early legal career included stints at major law firms in Brussels and Mexico City.
Before attending law school, he worked as an economic consultant, providing antitrust analysis for litigation purposes and to risk arbitrageurs. Chris has extensive experience with the legal, regulatory, and policy issues associated with robocall mitigation, the Telephone Consumer Protection Act, and the Truth in Caller ID Act.
He is a board member of the Secure Telephone Identity Governance Authority and is a member of the Industry Traceback Group advisory committee.
Greg Rogers – Bandwidth Inc.
Greg is Head of Global Policy and Regulatory Affairs for Bandwidth Inc. in Bandwidth’s office in Denver, CO. Greg is primarily responsible for Bandwidth’s wide array of regulatory and public policy matters at all levels of government both domestically and internationally. Bandwidth is a multi-faceted communications service provider that operates a nation-wide all IP-based network in the U.S. from its headquarters in Raleigh, NC.
Bandwidth.com CLEC, LLC. is a Bandwidth affiliate that operates a CLEC with a local PSTN interconnection and NANP footprint that spans the 48 continental states. Bandwidth’s CLEC network is a critical component of its full suite of VoIP and SMS/MMS service offerings. Bandwidth also operates a nation-wide 911 VPC network aimed at supporting emergency calling for IP-enabled services. As a wholesale provider, Bandwidth is also one of the largest Toll Free Resporgs in the country.
Greg has been at Bandwidth since 2010. Prior to joining Bandwidth, he was Senior Corporate Counsel for Level 3 Communications for over a decade. Greg is a graduate of the University of Colorado School of Law in Boulder, CO.
Harold Salters – CTIA
Harold Salters has been a regular participant on the Joint ATIS/SIP Forum IP-NNI Task Force since November 2016 in his role as a consultant for CTIA — Everything Wireless. He is extremely well-versed on STIR/SHAKEN and the special insights that the wireless sector brings to deployment and the need for ecosystem integration, where the SIP Forum plays such a vital role.
Prior to his consulting engagement, Mr. Salters was T-Mobile’s Director of Federal Regulatory Affairs for 14 years working on a broad range of wireless technical public policy issues, including cybersecurity, homeland security, network reliability/survivability and disabilities access. In those roles, Mr. Salters represented T-Mobile at DHS’s National Cybersecurity & Communications Integration Center, the FCC’s Communications Security, Reliability & Interoperability Council, and ATIS’s Network Reliability Steering Committee and Interim Non-Voice Emergency Services Incubator.
Prior to that, Mr. Salters was Sr. Director for Government Relations at PCIA, predecessor to the Wireless Infrastructure Association (WIA), and worked at two DC law firms and the FCC on private land mobile and microwave issues. Mr. Salters is a graduate of Queens College (CUNY) and has an MBA from Cornell University.
Chris Wendt – Somos
Chris Wendt is the VP of System Engineering at Somos, Inc., a leading registry management and data solutions company. He is co-author of many relevant specifications related to STIR/SHAKEN in both IETF and the ATIS/SIP Forum IPNNI Joint Task Force. As a member and co-chair of the STI-GA Technical Committee, he helped establish the trust anchor for the US STI-GA, the authority for signing telephone calls in the US telephone eco-system.
A pioneer in the real-time communications space and an expert in VoIP/SIP protocols and technologies, Chris led the architecture of Comcast’s IMS-based voice infrastructure (supporting over 25 million subscribers) and led the development and deployment of a cloud-based CPaaS/UCaaS solution utilizing webrtc based voice/video communications and messaging technologies.
Chris is currently a co-chair of the ATIS/SIP Forum IP-NNI Joint Task Force, co-chair of the STI-GA Technical Committee and active in many telecom standards bodies. He holds a BS in Music, and a BSEE, and MSEE from Drexel University in Philadelphia.
Richard Wikoff – Comcast
Richard is a Principal Engineer at Comcast, where he drives efforts to deploy new features and improve network efficiency in Comcast’s Communications Solutions group, working extensively on voice features. Richard serves as an Alternate to the FCC Disability Advisory Committee, contributing on communication-related efforts such as conferencing and real-time text (RTT). He has 12 years of experience at Comcast and holds 2 patents in SIP session routing, with other applications in process.
Prior to Comcast, Richard wrote specifications at Sonus (now Ribbon Communications) for SIP features in support of the worldwide client base. Richard contributed to PacketCable Business Services specifications.
Prior to Sonus, Richard helped architect a carrier-grade VoIP switch at Telcordia and led coding teams on both network and provisioning systems.