How much margin above sensitivity should be targeted?

Jon Langeler
Michwave Technologies, Inc.


> On Feb 14, 2018, at 11:01 PM, Chris Fabien <ch...@lakenetmi.com> wrote:
> 
> Regarding the distance, our ZTE will support up to 60 km, but max difference 
> of 20km between ONU on one PON. There's just a range parameter that needs to 
> be set. 
> 
> We ordered C+ optics and see a real optical budget of 33dB. The OLT is about 
> +5.5 tx and -34 min rx sensitivity. The ONU about + 0.5 tx and -28 rx sens. 
> 
> I've been very impressed with the optical performance.
> 
> We did test the ubnt as well. Went with ZTE
> 
>> On Feb 12, 2018 1:23 PM, "Adam Moffett" <dmmoff...@gmail.com> wrote:
>> That's also a compelling point.
>> 
>> It's not a simple question for sure.  
>> 
>> The other reason I would think about GPON is that if a larger company wanted 
>> to purchase our network down the road I have to think about what THEY will 
>> prefer.  They'll probably prefer PON. 
>> 
>> Humans are horrible at assessing their own biases, but I probably have a 
>> bias towards ethernet because it's familiar.  I try to bear that in mind too.
>> 
>> 
>> ------ Original Message ------
>> From: "Chuck McCown" <ch...@wbmfg.com>
>> To: af@afmug.com
>> Sent: 2/12/2018 1:13:18 PM
>> Subject: Re: [AFMUG] Outdoor PON OLT
>> 
>>> When doing full throttle Calix GPON we have about $570 invested in cpe 
>>> electronics, splitter, ont/olt/onu etc.  Everything but fiber and outdoor 
>>> cabinets.  
>>>  
>>> When doing active Ethernet you can come in closer to $100 per customer. 
>>> For non regulated greenfield, I am having a hard time convincing myself to 
>>> do PON. 
>>>  
>>> From: Mark - Myakka Technologies
>>> Sent: Monday, February 12, 2018 11:09 AM
>>> To: Chuck McCown
>>> Subject: Re: [AFMUG] Outdoor PON OLT
>>>  
>>> Chuck,
>>> 
>>> PLC splitter in spice case doing full fusion splicing.
>>> 
>>> -- 
>>> Best regards,
>>> Mark                            mailto:m...@mailmt.com
>>> 
>>> Myakka Technologies, Inc.
>>> www.MyakkaTech.com
>>> 
>>> ------
>>> 
>>> Monday, February 12, 2018, 12:09:32 PM, you wrote:
>>> 
>>> 
>>> Are you using splitters in splice cases or in cross connect boxes?
>>> 
>>> From: Mark - Myakka Technologies
>>> Sent: Monday, February 12, 2018 9:55 AM
>>> To: Adam Moffett
>>> Subject: Re: [AFMUG] Outdoor PON OLT
>>> 
>>> Adam,
>>> 
>>> There are some ranging things you have to consider.  "The requirement
>>> when deploying ONTs are the maximum distance between two ONTs cannot
>>> exceed 20Km."
>>> 
>>> The way we have done this is to reuse fibers as we travel down long 
>>> stretches of roads between neighborhoods.
>>> 
>>> We will deploy a 1x32 splitter in the field. We will splice that into the 
>>> last 3 ribbons/tubes of our fiber.  Example, if we were using a 144 count 
>>> cable, ribbons 10-12 will be spliced into.  After a few miles depending on 
>>> density or distance, we will splice in another 1x32 splitter to ribbons 
>>> 10-12.  We just keep doing this until we run out of light budget.  
>>> 
>>> We build to the lots passed, so we are not trying to optimize max usage per 
>>> port.  Currently, we average about 50% utilization on our ports.
>>> 
>>> 
>>> 
>>> 
>>> 
>>> -- 
>>> Best regards,
>>> Mark                            mailto:m...@mailmt.com
>>> 
>>> Myakka Technologies, Inc.
>>> www.MyakkaTech.com
>>> 
>>> ------
>>> 
>>> Monday, February 12, 2018, 11:38:39 AM, you wrote:
>>> 
>>> 
>>> Maybe I need to review the math.
>>> 
>>> I was figuring on several small splitters along the route.  I didn't 
>>> compare to a 1x32 in the cabinet because I figured if I brought every fiber 
>>> back to the cabinet then I didn't save anything versus ethernet.
>>> 
>>> 
>>> ------ Original Message ------
>>> From: "Mark - Myakka Technologies" <m...@mailmt.com>
>>> To: "Adam Moffett" <af@afmug.com>
>>> Sent: 2/12/2018 11:30:46 AM
>>> Subject: Re: [AFMUG] Outdoor PON OLT
>>> 
>>> 
>>> Adam,
>>> 
>>> How far are you going?  We are pushing almost 20 miles on a 1x32 split.  
>>> Are you using one 1x32 or multiple smaller splitters?
>>> 
>>> -- 
>>> Best regards,
>>> Mark                            mailto:m...@mailmt.com
>>> 
>>> Myakka Technologies, Inc.
>>> www.MyakkaTech.com
>>> 
>>> ------
>>> 
>>> Sunday, February 11, 2018, 10:24:30 PM, you wrote:
>>> 
>>> 
>>> I'm looking at rural areas (like a few houses per mile).  As I'm looking at 
>>> hypothetical power budgets for PON, I'm finding that if I run the line down 
>>> the road and put splitters on the pole I can split 5-6 times and then I'm 
>>> getting too low on db to keep going down the road.  At 5 or so houses per 
>>> port, a 1U, 8 port ONT is no denser than a 1U switch.
>>> 
>>> Your stated reasons for PON are all correct.  The numbers just aren't 
>>> seeming to work out for me.
>>> 
>>> I also figure if I install enough fibers for AE, I can still switch to PON 
>>> some day if I want to.
>>> 
>>> We would never max out the PON port, but looking back on the past 15 years 
>>> of growth in consumption I wonder if I                          should ever 
>>> say "never". In AE I can put 100Gig in every house if I have to.  I'll 
>>> "never" have to do that as far as I can imagine, but my imagination could 
>>> be limited.
>>> 
>>> -Adam
>>> 
>>> 
>>> ------ Original Message ------
>>> From: "Josh Reynolds" <j...@kyneticwifi.com>
>>> To: af@afmug.com
>>> Sent: 2/11/2018 9:28:34 PM
>>> Subject: Re: [AFMUG] Outdoor PON OLT
>>> 
>>> 
>>> A few reasons...
>>> 
>>> Port cost is still fairly high.
>>> 
>>> More splicing.
>>> 
>>> More fiber required.
>>> 
>>> Larger chassis required.
>>> 
>>> More power required.
>>> 
>>> More battery backup required.
>>> 
>>> Consumers not even close to using up 1-2 generations back of PON capacity 
>>> in most places.
>>> 
>>> On Sun, Feb 11, 2018 at 7:53 PM, Chuck McCown <ch...@wbmfg.com> wrote:
>>> 
>>> So, why do PON and not active in these super cheap optics days?
>>> 
>>> From: Chuck Hogg
>>> Sent: Sunday, February 11, 2018 6:10 PM
>>> To: af@afmug.com
>>> Subject: Re: [AFMUG] Outdoor PON OLT
>>> 
>>> We are walking away from them and Alphion...I think Mark's product with 
>>> Zhone is different.
>>> 
>>> Regards,
>>> Chuck
>>> 
>>> On Sun, Feb 11, 2018 at 2:29 PM, Mike Hammett <af...@ics-il.net> wrote:
>>> 
>>> I think Chuck Hogg walked far away from DASAN...  or maybe it was DASAN 
>>> that rescued them from the one they walked far away form. I don't remember 
>>> which.  ;-)
>>> 
>>> 
>>> 
>>> -----
>>> Mike Hammett
>>> Intelligent Computing Solutions
>>> 
>>> Midwest Internet Exchange
>>> 
>>> The Brothers WISP
>>> 
>>> 
>>> 
>>> 
>>> From: "Jason McKemie" <j.mcke...@veloxinetbroadband.com>
>>> To: af@afmug.com
>>> Sent: Tuesday, February 6, 2018 4:35:53 PM
>>> Subject: [AFMUG] Outdoor PON OLT
>>> 
>>> In light of finding out that Calix's offering is not going to be anywhere 
>>> near within budget, does anyone else have any other suggestions? 
>>> 
>>> I found these guys, but have never heard of them:
>>> http://www.richerlink.com/en/products.asp?ClassID=116
>>> 
>>> It looks like DASAN also has an option - I've at least heard of them:
>>> http://www.dasannetworks.com/product_images/V5806_20140520174927.pdf
>>> 
>>> -Jason

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