[AusNOG] NBN 1Gb "fiber" services

[Jake Anderson]

On 25/02/16 09:52, Paul Brooks wrote:
> On 25/02/2016 8:45 AM, Aftab Siddiqui wrote:
>> *
>> *
>>
>>     Yes its off a standard FTTH NTD - I believe GPON is capable of
>>     around 2.4gbits to an NTD.
>>
>>
>> Yes, it should be 2.5G/1.25G per PON Port unless they are using 
>> XG-PON which I doubt.. or are they? and with atleast 1:64 split ratio 
>> thats severaly contended - but thats not a questions here :)
>
> Standard 2.5G down, 1.25G up G-PON port for the uplink, and GigE 
> copper Ethernet ports for the UNI, which should be able to run fully 
> symmetric. Split ratio I believe starts at 32:1, with the ability to 
> do a PON-split into two 16:1 sections or further in the unlikely event 
> that so many 100/40 or higher services are hanging off the same 
> splitter that contention becomes even remotely likely.
>
The max split ratio is 32:1, Generally NBN are running ~20:1 or so in 
the field I believe (or thereabouts) so it should be uncontended back to 
the FSAM at 100mbit, worst case its ~75mbit if the entire split is 
running at full speed.
That said nbnco were meant to be trailing or rolling out 10gpon this 
year or next for new areas, with the mtm pile I don't know if that is 
still happening.
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