The Government has offered Australia's three mobile operators, and vividwireless, renewal of their existing spectrum allocated on 15 year licences in the late 90s and early 2000s at set prices, while the Government expects to rake in $3 billion.
According to a posting on Light Reading in June this year, despite multiple rounds of interoperability testing GPON interoperability had never been fully achieved and lack of OMCI interoperability remained the major stumbling block. "OMCI was one of the last pieces of the GPON standard to fall into place, in 2004. And no one's used it since," Light Reading said.
However in November 2008, Telcordia reported on its seventh round of GPON interoperability testing, saying "The main goal of the test event was to demonstrate GPON equipment management interoperability via the ONT Management & Control Interface (OMCI), with focus on best practices documented in the draft ITU-T G-PON G.984.4 Implementers' Guide (G.984.4impl). Detailed test cases were carried out to verify the ONT equipment management, including OMCC establishment, management information base (MIB) synchronisation operations, ONT capability discover, and ONT software image updating." It did not suggest that the test had failed.
According to Alcatel-Lucent, GPON interoperability was initiated in 2006 by The Full Service Access Networks (FSAN) group but this group is focusing its efforts on defining interoperability first on the physical layer, then the transmission convergence layer, and finally the most complex, ONT Management Control Interface (OMCI).
"While physical and transmission control layer standards are clear and well defined, the OMCI-related standards have too many optional objects which have hampered interoperability. GPON vendors have a choice of which option to implement, which leads to different mutually-exclusive implementations of the same standard."
Consequently, the ITU-T has standardised best practices in terms of OMCI in an OMCI implementers guide version 1 to address data services and multicast (December, 2008). A version 2 is underway and is expected to be finalised by the end of this month, September 2009.
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