No. 1 Story
ACCC clears Optus to scrap HFC network and use NBN instead
The ACCC has cleared, provisionally, the proposed deal between Optus and NBN Co under which Optus is to be paid around $800m to shut down its HFC network and transfer customers onto the NBN. read moreAlcatel-Lucent opens its GPON networks to other vendors' CPE
Stuart Corner
Tuesday, 08 September 2009 09:46
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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.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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