Mark: That's correct, we can do the same. You just have to worry about the differential timing window, manufacturers call it different things.
Regards, Chuck On Thu, Aug 3, 2017 at 11:27 AM, Mark - Myakka Technologies <[email protected] > wrote: > Chuck, > > We are pushing 30km with our GPON using C Lasers. Our zhone equipment > allows use to slide that 20km window to fix the timing issues. That port > is on a 20km-40km timing window instead of the standard 0km-20km. > > > > *-- Best regards, Mark *mailto:[email protected] > <[email protected]> > > > *Myakka Technologies, Inc. *www.MyakkaTech.com > > > *Proud Sponsor of the Myakka City Relay For Life * > http://www.RelayForLife.org/MyakkaCityFL > > *Please Donate at Please Donate at *http://www.myakkatech.com/RFL.html > > > > > *------ Thursday, August 3, 2017, 11:10:02 AM, you wrote: * > > Last time I did some calculations, you run into timing limitations before > you run out of light. > > *From:* Chuck Hogg > *Sent:* Thursday, August 3, 2017 8:11 AM > *To:* [email protected] > *Subject:* Re: [AFMUG] UBNT OLT Transition from Active Ethernet to GPON > > It doesn't work that way, "turn down". There are specification limits, > those are specified in the optics. Maximum differential fiber distance is > usually about 20km for the distance from your nearest to farthest client. > There are different optic levels, B+/C+, but it really depends on your > splits and light levels. > > Regards, > Chuck > > On Thu, Aug 3, 2017 at 9:33 AM, Adam Moffett <[email protected]> wrote: > > Don't forget that Sterling is doing ethernet, not PON. I've plugged in a > pair of 40km ethernet SM SFP's at 3' away and they work fine because > they'll turn down the tx power. > > With PON there's a single Tx source for the entire network, it can't turn > down because you may have subs at 1km and other subs at 20km. > > > ------ Original Message ------ > From: "Josh Reynolds" <[email protected]> > To: [email protected] > Sent: 8/2/2017 1:29:28 PM > Subject: Re: [AFMUG] UBNT OLT Transition from Active Ethernet to GPON > > > To clarify, there is no real intelligent attenuation on any optical > product I have ever seen. Some can do a 2-3db depending on the product, but > it's never really a truly intelligent system with bidirectional > communication between the optics to negotiate power levels. > > I may be wrong but this is just my experience. > > On Aug 2, 2017 12:26 PM, "Josh Reynolds" <[email protected]> wrote: > > How could they? TX and RX are different optic sources. You might have a TX > power level much higher on one end than the other due to manufacturing > differences or different equipment. > > On Aug 2, 2017 12:10 PM, "Sterling Jacobson" <[email protected]> wrote: > > Hmmm, that's not good if it can't auto-attenuate down. > > Sounds like they need to fix that. > > Most of my SMF lasers and links are short and 'hot', but doesn't seem to > bother anything I'm currently using. > > > > -----Original Message----- > From: Af [mailto:[email protected]] On Behalf Of Brett A Mansfield > Sent: Wednesday, August 2, 2017 10:16 AM > To: [email protected] > Subject: Re: [AFMUG] UBNT OLT Transition from Active Ethernet to GPON > > I need to print a retraction here. I have been talking to Martin at UBNT > and he shows me the error of my ways. I do not have a 50% failure rate. In > fact, it's a 0% failure rate. My signal was just too hot. I'm new to the SM > Fiber game, so I'm learning as I go. I didn't realize the signal could be > too hot at only -3 dB. All of my multi mode Fiber sits at -2 dB and works > really well. > > You learn something new every day. > > Thank you, > Brett A Mansfield > > > On Jul 31, 2017, at 2:46 PM, Brett A Mansfield < > [email protected]> wrote: > > > > I have heard a lot of complaints from DirectCom customers about their > Fiber never being close to what they pay for, but that may be more related > to the way it's throttled then the GPON. > > > > I've been playing with several of these ONT/OLT over the past week. I > really like them. Though I have a 50% failure rate on the nanoG's. The > fiber port breaks very easily. > > > > Thank you, > > Brett A Mansfield > > > >> On Jul 31, 2017, at 2:31 PM, <[email protected]> <[email protected]> wrote: > >> > >> We have good luck with 32 customers per 2.4 Gbps down on GPON. Lotsa > overhead. No problems, not even close, so far. And we are selling more > Gig circuits than ever before. > >> > >> -----Original Message----- From: Sterling Jacobson > >> Sent: Monday, July 31, 2017 2:19 PM > >> To: '[email protected]' > >> Subject: [AFMUG] UBNT OLT Transition from Active Ethernet to GPON > >> > >> Anyone tried their PON OLT CPE and OLT 8 port (128 clients per port) 1U > unit? > >> > >> I see pricing around $70 retail for OLT, but haven't seen pricing yet > for the OLT 1U unit. > >> > >> Also, I'm active fiber right now, so I have full 1 to 1 panels in the > rack already. > >> > >> If I wanted to 'migrate' to OLT from active I would need some sort of > transition panel/setup right? > >> > >> Right now my density is 48 ports per 1U 1 to 1 single family home > connections. > >> > >> The UBNT Fiber OLT has 8 ports handling up to 128 clients each, with > 20Gbps uplink capability (not quite sure on those split details yet). > >> > >> I currently only take a max of 576 per cabinet on active, so I could > easily use just one of these UBNT fiber OLT units. > >> If I don't care about the share ratio I guess, I would just get another > 576 panel count that spliced 72 count to each port and I'm done. > >> > >> I'm unclear what that panel/splice would look like though since I've > never actually done GPON. > >> > >> And I would probably want to not load up that many per port, and > instead maybe get four of the UBNT Fiber OLT units. > >> That would take up 4U of rack space, the fanout would probably still > take up 4U of rack space, for a total of 8 U. > >> And I would have instead an 18 customer to 1 port on the GPON instead > of 72 which I like better for future use. > >> > >> Do these UFiber OLT 1U rackmount units share just 1Gbps per each of the > 8 ports? That would only be 8Gbps needed total. > >> So I assume the GPON spec they are using can transmit more than that > per each of the 8 GPON ports, right? >
