IMS Forum

September 02, 2010 15:15 ET

NGN IMS Forum Publishes Three New Working Group Papers on Best Practices for Deployment of the Diameter Protocol and IP BSS/OSS and Security Architectures

DENVER, CO--(Marketwire - September 2, 2010) -  The NGN IMS Forumannounced today that it has published the following Guideline documents on best practices for IP BSS/OSS & Security and Diameter implementations:

  • BSS/OSS & Security for Services in NGN/IMS Paradigm: Guidelines for Implementation
  • Interoperability Challenges in Diameter Implementations
  • IMS AAA Architecture: The Diameter Advantage

The BSS/OSS & Security for Services in NGN/IMS Paradigm Guidelines for Implementation, document is the result of the work of the BSS/OSS & Security Working Group and the Forum's recent Plugfest interoperability test events. BSS/OSS solutions for a next generation landscape must work as one with the network while unifying critical business functions to better manage and effectively monetize NGN services and the next generation subscriber experience. This will call for open and flexible solutions that keep the customer experience at heart while adhering to industry standards and providing the much needed flexibility to accommodate new requirements. It covers the following points and offers some suggested best practices for the implementation of NGN BSS/OSSs. 

  • Introduction of Next Generation BSS/OSS & Security Architectures
  • Security and Reliability
  • BSS/OSS Unification
  • Adopting or moving toward NGN OSS 
  • Deploying an IP Subsystem networks 
  • IMS/NGN Rating & Charging Impacts 
  • Diameter Compatibility Challenges 
  • IMS/Next Generation Network BSS/OSS 

"Today, the BSS/OSS reality for most operators is one of multiple, discrete systems that have their own process for viewing, analyzing and managing data. The integration of these systems is a time consuming and expensive process that can impact service providers' time-to-market and the end-users' overall experience and costs," said Thomas Maufer, director of technical marketing, Mu Dynamics. "Industry experts recognize that to address the challenge of bridging systems from yesterday, today and tomorrow, communications service providers (CSPs) need to have an innovative, scalable business support system (BSS)."

"IMS will gain an increased foothold in operator networks as operators globally embrace LTE as the technology of choice for 4G networks and use IMS to support Voice and other multimedia services," said Suresh Bhandarkar, Director Technology, Tech Mahindra. "This will require a hybrid B/OSS environment to support the hybrid 3G/4G networks. Operators need to put a strategy in place to manage the B/OSS and security requirements of such hybrid environments without compromising on business agility and service velocity in order to reduce operational costs, offer new revenue-generating services and maintain customer loyalty."

"Diameter is a very important enabling protocol for next generation wireless and wireline networks alike. Aricent is delighted to be working with NGN and its members to alleviate potential interoperability challenges developers may face today," said Rakesh Vij, Assistant Vice President at Aricent. "The shift to IP-based networks has resulted in the migration from many AAA functionalities to Diameter, necessitating interoperability between legacy protocols and multiple Diameter versions. As a pioneer in the development of highly interoperable Diameter and IMS protocol implementations, we are committed to helping drive adoption of next generation IMS-based networks."

The main purpose of the Interoperability Challenges in Diameter Implementations Working Group Paper is to explain the advantages of this protocol and the reasons why it fits with AAA (Authentication, Authorization and Accounting) functionalities. It addresses the following questions: What are the main concepts that are involved in the Diameter protocol? Where is this protocol used inside the IMS architecture?

Diameter has been embraced by 3GPP and ETSI standard bodies as the foundation for AAA functionalities for the Next Generation Networks based on IP Multimedia Subsystem. With the advent of WiMAX and LTE Diameter is becoming the obvious choice of network providers to implement in these architectures. However, different interpretations and implementations of new standards may lead to incompatibilities between vendors. Also, evolving standards may require altering implementations to keep up with specification changes.

The IMS AAA Architecture: The Diameter Advantage Working Group Paper focuses on the interoperability issues and challenges observed in diameter implementations in NGN networks. It covers such concerns as cross-release issues, contradictions and ambiguity in the specifications leading to different implementations, inconsistent rules and guidelines for defining new diameter applications, backwards incompatibility, version handling, etc.

The following NGN Forum member companies contributed to these documents:

• Aricent • Mu Dynamics
• Comverse • Traffix Systems
• HP • Tech Mahindra
• Marben Products • T-Mobile

"These topics will be further tested out at our next IMS Plugfest™ and NGN Plugfest™ interoperability test event," said Michael Khalilian, Chairman & President NGN Forum. "Additional themes for this Plugfest include NGN Network and IMS Rich Applications deployment including location-based services, interoperability testing and real-time IP Service integrity." 

Registration for the Interoperability and Testing (Plugfest) Working Group is now open for any service providers, integrators and vendors who would like to participate ( To receive a copy of these Working Group documents please contact:

The NGN IMS Forum will hold a technical board meeting at the ITEXPO West 2010 and the 4GWE Conference on Tues: Oct. 5th from 2 - 4 pm, in room 304B. All interested conference participants are welcome to attend. 

About the NGN Forum

The NGN Forum is the premier global telecommunications association devoted to Next Generation Network (NGN) service delivery and interoperable IP Multimedia Subsystem (IMS) services architectures and solutions. The Forum's mission is to accelerate the interoperability of IMS and NGN services and to enable enterprise and residential consumers to benefit fully from the delivery of M-play™/rich multimedia, mobility and fixed services over wireline, cable, GSM, UMTS, Wi-Fi, WiMAX, LTE and fiber broadband networks. The Forum is the creator and organizer of the IMS Plugfests™ and NGN Plugfests™, the industry's only events focused on verification and certification of IMS and NGN service interoperability through the IMS Certified™ and NGN Certified™ programs.

Through organized Plugfests, technical working groups and other activities, Forum members develop cost-effective technical frameworks for revenue generating converged IP NGN solutions. The combined organizations include over 2000 executives and technical, business development and marketing professionals from global and emerging equipment vendors, solution providers, integrators, service providers, and governmental agencies. For additional information or to join the NGN Forum, the IMS Plugfest, and NGN Plugfest, please visit or

Contact Information

  • For Further Information contact:
    NGN IMS Forum Media Relations
    Cathy Clarke