TOPS Council

Completed Initiatives


Leadership: iconectiv, CenturyLink

The Testbeds Focus Group developed detailed test plans covering four priority areas, with an initial testing focus on validating the STIR/SHAKEN protocol to sign and verify calling number to combat illegitimate caller-ID spoofing. They have completed efforts on the test plans for Distributed Service Bureau Number Assignment, Just-in-Time Number Assignment using Existing Systems; and Routing (IP-LERG and IP Toll Free). A full report of these testing activities and results has been published: Testbeds Focus Group – Test Plans and Observed Results. These priority test cases were gathered through the focus group’s initial publication of Testbeds Landscape Team - Assessment and Next Steps, Version 2.

Calling Party Anti-Spoofing

Leadership: Brian Daly, AT&T; Amy Hindman, Verizon Wireless; Jose Jimenez, Cox

In April 2016, the CPAS Landscape Team published the Calling Party Spoofing Mechanisms and Mitigation Techniques white paper. The document informs policymakers and others about the challenges posed by Caller ID spoofing and related robocalling and provides a comprehensive overview of the industry work being conducted to address this challenge. This analysis concludes that a layered approach, similar to that used in cybersecurity efforts, provides the flexibility to respond to these evolving threats, and that mandating a single "solution" to Caller ID spoofing would be counterproductive. A wide range of mitigation techniques is proposed as the white paper specifically states that with a single mandated solution fraudulent callers would simply find other ways to exploit existing or future infrastructure.

Intelligent Programmatic Peering

Leadership: Nima Salehi, TELUS

Intelligent Programmatic Peering: Mitigating DDoS attacks — and more. The Intelligent Programmatic Peering Landscape Team (IPLT) was convened to create industry solutions identifying mechanisms to leverage SP to SP communications to better mitigate DDoS attacks. The IPLT has specifically addressed the fact that existing DDoS mitigation techniques do not use real-time information exchange between SPs. The IPLT has assessed available mechanisms for addressing the problem including RTBH Filtering (Remotely Triggered Black Hole), Policy Based Routing, and BGP FlowSpec. It is currently reviewing these mechanisms with an eye toward understanding the need for best practices and who should define these in the industry. The Landscape Team is currently posing critical questions to service providers, and developing a template for a “DDoS Mitigation Peering agreement.” Its conclusions will be validated with service providers.

Output: Intelligent Programmatic Peering Summary Report, December 2016.

Neutral Host Landscape Team

Leadership: Michael Recchione, Cisco

Providing uniform cellular coverage to all employees and guests in managed spaces such as sports stadiums, shopping malls, and offices requires deploying dedicated cells to enhance signal strength and overcome indoor coverage limitations. One particular problem is that separate cellular infrastructure from all major wireless service providers must be deployed. Efficiencies could be gained if a single infrastructure was deployed that all wireless providers could use, thus making the in-building system a neutral host for cell coverage, unaligned with any specific provider. This TOPS Council initiative will analyze the technical options for a streamlined solution of this type in the context of the U.S. regulatory environment. The analysis would focus on surveying potential technical solutions and comparative technical trade-offs, rather than providing a business analysis.

White Paper: Neutral Host Solutions for Multi-Operator Wireless Coverage in Managed Spaces, September 2016

NFV Characterization and Capacity Planning

Leadership: Rajesh Gadiyar, Intel Corporation; Pavan Kurapati, Juniper Networks; Tim Verrall, Intel Corporation

Addressing techniques and metrics for capacity planning and service assurance for SDN/NFV networks. The introduction of NFV and SDN technology means operators increasingly rely on generic infrastructure that can be used to run many different types of application. This approach delivers huge improvements in service velocity and network flexibility while also reducing costs. However, this flexibility means that operators must work to ensure that their infrastructure is correctly dimensioned and resources are matched to services so the performance requirements of all services are met. Launched in January 2017, this Focus Group will develop a framework for NFV capacity planning. This work will ensure that the NFV Infrastructure is dimensioned to meet the needs of the NFV applications it supports across a range of key performance indicators (KPIs). The work will consist of parallel activities to address:

  • The characterization of different service types in terms of their critical KPIs and the parameters that describe their infrastructure requirements; and
  • An analysis of how to measure KPIs to assess the resource utilization and headroom on operational NFV infrastructure and to identify the specific parameters that should be instrumented in the NFV architecture.
This work completed with the publication of NFV Infrastructure Metrics for Monitoring Virtualized Network Deployments.

Reliability Implications of Emerging Technologies and Services

Leadership: Percy Tarapore, AT&T

Currently, network reliability assessments focus on understanding and measuring customer-impacting outages based on existing wireless and wireline technologies. Emerging technologies (e.g. 5G, virtualization, ICN) can fundamentally alter the nature of network resiliency and the impact of outages. Therefore, there is a need to examine the network resiliency implications of new technologies, taking into account both physical and cybersecurity considerations.

This initiative will identify key existing metrics and requirements (if any), with a specific focus on services intended to be used for public safety-related communications. Further, the Focus Group will identify emerging technologies with potential impact on service resiliency, including items such as mobile edge computing, SDN/NFV, 5G, and peer-to-peer networks. The team will determine areas where the identified emerging technology trends could affect network resiliency, and provide insight into the potential impact of emerging technologies on network reliability. The assessment will only consider the broad “directional” implications of technology with a focus on the most significant impacts. This work was completed with the publication of Reliability Implications of Emerging Technologies/Services.

Wi-Fi Emergency Calling

Leadership: Stephen Edge, Qualcomm
Peter Musgrove, AT&T

Promoting safeguards for emergency services. Wireless carriers support Voice over Wi-Fi in order to offload the cellular networks and/or increase coverage area. Emergency calling on Wi-Fi networks poses challenges in this paradigm. This new TOPS Council effort will develop use cases for Wi-Fi emergency calling and survey the standards landscape to identify specific needs to support Wi-Fi emergency calling use cases. The proposed initiative will also determine work items for various ATIS committees and/or 3GPP contributions.