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Next Generation Network Access (NGNA): Status of work in the ATM Forum

Next Generation Network Access (NGNA): Status of work in the ATM Forum. Gerhard Mägerl ATMF Technical Committee Vice Chair gerhard.maegerl@icn.siemens.de. ATM Forum Mission and Scope. Bylaws revisited and mission statement changed during 2001: The mission of the Corporation is to

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Next Generation Network Access (NGNA): Status of work in the ATM Forum

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  1. Next Generation Network Access (NGNA):Status of work in the ATM Forum Gerhard Mägerl ATMF Technical Committee Vice Chair gerhard.maegerl@icn.siemens.de Tiphon BOF, November 13, 2001

  2. ATM Forum Mission and Scope • Bylaws revisited and mission statement changed during 2001: • The mission of the Corporation is to • support the acceptance and implementation of Asynchronous Transfer Mode ("ATM") and other broadband technologies, applications and services, based on national and international standards, and • support the advancement and convergence of technologies that enhance ATM and other broadband markets. Tiphon BOF, November 13, 2001

  3. Major work item in the Voice and Multimedia over ATM (VMOA) WG initiated as follow up to the Loop Emulation Services (LES) specification, which was done in cooperation with DSLF and technical basis for Broadband Loop Emulation Service (BLES) done in cooperation with ETSI for V5-based protocols and adopted as DEG/SPAN-130104 LES relies on TDM interface (GR303 and V5) to and is controlled by Local Exchange NGNA moves to NGN interfaces and control Next Generation Access (NGNA) Tiphon BOF, November 13, 2001

  4. NGNA (phase 1, btd-vmoa-ngna-01.04) corresponds to the "legacy terminal view" and "technical migration view" as described in the NGN-SG report It is an objective that POTS and ISDN services are delivered to the subscriber in a way that allows the use of conventional telephony equipment by the subscriber and in a quality perceived as equal to that of today's service. Governing principles are Service delivery independent of the underlying transport technology. Functions architecturally distributed over several Network Elements NGNA: Objectives Tiphon BOF, November 13, 2001

  5. NGNA: Reference Model MGC Service Interface Media Gateway Controller MGC Interface H.248 Control & Signaling Interface Broadband Network Subscriber Media Gateway Transit Media Gateway Subscriber side Interface Network side Interface MG Interface MG Interface To Broadband/ TDM Network Bearer To Equipment Tiphon BOF, November 13, 2001

  6. LES CP-IWF TE Packet Interface Subscriber Media Signalling CO-IWF AAL2 VCC Gateway Bearer CP-IWF TE Packet Interface Residential Subscriber Media Signalling Customer Interface Equipment Gateway Bearer Subscriber Media Gateways (Examples) TE . Packet Interface Line I/F Funct Signalling TE Analog Subscriber Lines Subscriber Media Bearer 1 Gateway LT ET/ Digital Bank NT1 TE NT1 TE ISDN Subscriber Lines 2 3 Tiphon BOF, November 13, 2001

  7. The functionality of the MGs and of the MGC Interfaces and protocols for the transport of the media stream Interfaces and protocols for signalling transport Signalling protocols for the control of the call, the bearer and the media stream, in particular relevant H.248 packages required to support the services Relevant management plane aspects Relevant security aspects NGNA: Scope To identify and/or define the following functions, interfaces and protocols required for the delivery of voice band services Document structured accordingly Tiphon BOF, November 13, 2001

  8. NGNA: Protocol reference model User side Network side NGNA Domain Other Network CPE SMG MGC TMG Call Call Call Control Control Control Gateway Gateway Gateway Control Control Control Bearer Bearer Control Control Tiphon BOF, November 13, 2001

  9. User side Q.931 backhaul over ... for ISDN terminals Network sideout of scope, but to be considered because of possible impact on requirements BICC SIP-T Call Control Tiphon BOF, November 13, 2001

  10. H.248 / Megaco appropriate packages depending on media transport includes support of analog terminals (POTS) Gateway Control Work on enhanced packages for POTS support going on in the IETF in the context of H.248 support for LES Tiphon BOF, November 13, 2001

  11. ATM / AAL2 ATM VCs AAL2 channels IP IP-IP tunnels MPLS LSPs Bearer Control Depends on Broadband bearer network Tiphon BOF, November 13, 2001

  12. SSCOP over AAL5 I.366.1 ADT IUA over SCTP (for Q.931) SCTP ... Signalling transport Depends on network scenario Tiphon BOF, November 13, 2001

  13. Subscriber provisioning Autoconfiguration at start up Service provisioning at start up during operation Usage measurement (for billing) Management functions Security functions Tiphon BOF, November 13, 2001

  14. At ATMF meeting in San Diego, January 20-25, 2002 BOF with VMOA agree on terms of cooperation agree on output agree on a work plan How to proceed Tiphon BOF, November 13, 2001

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