Yeah, each optical interface has a different maximum and minimum operational range. You should be able to find that rating in SFP/SFP+ docs, ONT/OLT docs, etc.
It pays to keep a stock of some -6dB or -9dB pluggable attenuators on hand. You'll need them when you go to install subs too. On Aug 2, 2017 11:16 AM, "Brett A Mansfield" <[email protected]> wrote: > 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? >
