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? >> >
