1. Session 7 Highlights & Conclusions
Alain LE ROUX
France Telecom
7/14/2019

2. Session 7 – NGN oriented solutions and plans
Presentation 1 “NGN complementing the Internet for converged networks” (Cisco Systems)
NGN based on IP related or friendly Transport technologies
to deliver Carrier class (i.e. reliable & secure) and Business class Internet services
Presentation 2 “The 21st Century Network - Standards requirements” (BT)
More services over a converged network with fewer network elements
Several critical standards areas and some highest priority standards requirements identified
Presentation 3 “Cable networks on the NGN road: IPCablecom and PacketCableTM Technologies and Development status ” (CableLabs & ECCA)
Cable IP-based QoS enabled Multimedia service platform (XoIP)
VoIP trials ongoing and commercial rollout planned in near future
7/14/2019

3. Session Highlights
NGN service rich packet-based modular platform, access agnostic
Service convergence over IP, end-to-end (IP/MPLS) packet intelligence and deterministic traffic handling
With open standard interfaces between service control and Platforms
Interworking with legacy networks/services and Internet applications
Integrated OSS and Web-based management & provisioning
Interconnections between Network domains/carriers for IP based services are becoming important
Radical network convergence to fewer networks and systems carrying more services, converging in from the edge
Cable Networks towards NGN: PacketCable 1.x and PacketCable Multimedia specifications (all issued or about to)
7/14/2019

4. Session Issues NGN business model requires rethinking legacy paradigms
Need to ensure VoIP/VoATM/PSTN interworking
SIP-BIC-ISUP interworking is currently a high priority. BICC adopted in UMTS UTRAN, but which role in fixed networks?
More important to converge in access and backhaul (where capex & opex are most significant) than in core
Fewer network elements (supporting more capabilities), all with distributed intelligence, security, VPN & OSS functionality
Is that compatible with distributed and separated transport-session-service control ?
Cable Networks: access specific or fully network specific systems?
Why does SIP-based Call Network Signalling (CNS) need to be specific? Which interfaces could be common to xDSL/Fiber NGN access ?
7/14/2019

5. Conclusions & Recommendations
Consensus on NGN being IP-based Multimedia enabled. Many (too many?) specifications/Standards emerging and products appearing on the market for access-backhaul-core segments:
But do they fulfil Operators/Service Providers requirements?
How to ensure that all the pieces of the puzzle fit together and interoperate?
What about building NGN over 3G architecture & interfaces with necessary extensions/adaptations to accommodate wireline and fixed wireless access ?
Recommendation : to avoid multiple different architectures and interface solutions for similar requirements (e.g. mobility mgnt, session control, resource & QoS control):
Analyse system architectures and identify common (edge, core) requirements
Identify extensions to existing specs required for xDSL & fiber NGN access
Agree on the standards critical areas (with Framework harmonisation with Mobile & Cable: e.g. for Architecture, Signalling, Security, QoS, OSS
Identify evolution scenarios and steps, and prioritise standards requirements
7/14/2019