Metropolitan Area Communication System: Integration Phase


MAXI - 5193

Keywords MANs, B-ISDN


Start Date: 01-JAN-92 / Duration: 24 months

[ contact / participants ]


Objectives and Approach

MAXI follows up the work started in project 2100, MAX. In MAX, the design had been carried out of a multi-services communication system suitable to meet the demand for flexible communication services coming from business users locate within metropolitan areas. MAXI focuses on prototype development, integration and proof-of-concept laboratory demonstrations. The system is able to support multi-megabit applications, such as LAN-to-LAN linking, mainframe-mainframe data transfer, high-resolution image exchange, and 2 Mbit/s isochronous services (such as video conferencing, PABX interconnections, etc.).

MAXI uses the system architecture, specification, breadboards, hardware and software modules that were developed in the MAX project, and is based on commercially available components and technologies including single-mode optical fibres, optical high-speed electronics, application-specific integrated circuits (ASICs), advanced multiprocessor architectures and software packages. MAXI allows to:

MAXI is exploiting the basic architecture and system choices already made in MAX. These choices are now confirmed by the results of standardisation activities and market trends. MAXI is in fact using optical transmission systems compliant with Synchronous Digital Hierarchy, SDH (CCITT Recommendations G.707-G.709) at 155 Mbit/s, distributed multiple access protocol based on DQDB (ETSI/IEEE standard MAC protocol), network management system based on Telecommunication Management Network, TMN (CCITT Recommendation M.3010). The compatibility with the Asynchronous Transfer Mode, ATM (CCITT B-ISDN Recommendation I.121) and with the existing broadband service specifications (such as the Connectionless Broadband Data Service, CBDS, defined by ETSI) is taken into account in MAXI.

The project has been successfully promoting the MAX/MAXI concepts to foster convergence towards a common European position with MAN standard-setting bodies (eg in ETSI). Active participation, including delivery of contributions, has been taking place also in the relevant committees of the CCITT and IEEE.

The key element in the system architecture is the MAX node: all MAX nodes include the same Communication Subsystem (whose implementation is based on the choices above), but are equipped with different network access modules (NAMs). NAMs provide access to Ethernet and FDDI LANs, and to isochronous 2 Mbit/s equipment (eg video conferencing, PABX, etc). Moreover, the design for a B-ISDN access module, able to interface user equipment generating ATM-structured traffic to the DQDB MAN, is available.

Exploitation

According to the strategies of the industrial partners involved, a range of products could be derived from MAXI including turn-key MAN systems, interworking products, chip-sets and network management systems and services.


CONTACT POINT

Mr Alberto Trondoli
SIRTI SpA
Via Vida 19
I - 20127 Milano
tel: +39/ 2 6677 8329
fax: +39/ 2 6677 8358

Participants

SIRTI SPA - I - C
CSELT - I - P
KTAS - P - P
NKT ELEKTRONIK - DK - P
HEWLETT-PACKARD LTD - UK - P
L-CUBE INFORMATION SYSTEMS SAGR - GR - A
NATIONAL TECHNICAL UNIVERSITY
OF ATHINAI - GR - A


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MAXI - 5193, December 1993


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html version of synopsis by Nick Cook