(Continuation of Question 2/15)
Background and justification
Recommendations G.983.1 and G.983.2, which were completed in the 1997-2000
study period have allowed telecommunications manufacturers to develop B-PON
based, inter-operable access equipment. Practical experience with the design and
network deployment of B-PON equipment will necessitate revision of these
Recommendations. In particular, there is a need to enhance these Recommendations
in order to accommodate a variety of services and Internet Protocol (IP) traffic
in an efficient manner. This could include increases in capacity to extend into
the Gigabit/s range.
The use of new technologies such as wavelength division multiplexers, arrayed
wave-guide filters, optical amplifiers, or new system approaches such as hybrid
fibre-radio (HFR) systems in the access network, will necessitate the
development of new Recommendations in these areas.
Demand for fibre access will be driven by factors such as: the ability to
carry interactive and broadcast services (residential video, HDTV), managed
bandwidth to multiple ISPs, longer reach, higher quality of service. Solutions
are required for a wide range of market segments and situations including:
business, small-to-medium-enterprise, small-office-home-office, residential,
green field, and rehabilitation.
Solutions should be related in a timely way to service requirements.
- What enhancements to existing Recommendations are needed to enable legacy
or other services on a B-PON access network; e.g. residential video or
- What modifications to existing or new Recommendations need to be developed
to allow higher levels of service capability; e.g. DWDM?
- What new Recommendations need to be developed to allow systems to evolve to
much higher split ratios physically and logically?
- What enhancements or new Recommendations need to be developed to meet new
capacity/bandwidth allocation requirements?
- What enhancements or new Recommendations need to be developed to enable
resilience requirements to be achieved in the fibre access network; e.g. dual
cards, VP protection, switchover procedures, alternative paths or drop
- What enhancements to existing Recommendations need to be defined to improve
- What new Recommendations need to be developed to meet new fibre access or
fibre-hybrid system requirements?>
- What new Recommendations are needed to meet new requirements for greater
distances in the access network?
Study items to be considered include:
- How to improve Recommendations to enable new vendor or operator specific
requirements to be added; e.g. management systems support of Ethernet, IP, new
alarms or additional attributes to existing managed entities
- How to meet future requirements for capacity in optical access systems e.g.
Gigabit/s capacity systems
- Impact of new component technology on optical access networks
- Increasing service capability
- Improving protocol efficiency
- Improved survivability
Maintenance and enhancements of Recommendations in the G.983
series with regard to capacity, interoperability, new MAC/TC layers,
management and control interfaces, survivability, spectral management, split
ratios or other requirements (2002)
Other relevant Questions of SG 15 on optical systems and transmission
- ITU-T SG 4 on management aspects
- ITU-T SG 6 on hybrid fibre/copper networks
- ITU-T SG 9 on television and sound transmission
- ITU-T SG 13 on access network architecture and ATM layer characteristics
- ITU-R SG 9 on radio-frequency transport over optical fibres on fixed wireless loop
- IEC TC86 and its sub-committees on system test methods
- ATM Forum
- IEEE 802.3