Well, as an employee of a regulated telco back in that day, I was
actually asked my opinion on the design of the USOC (universal service
order code) Registered Jack (RJ 11 etc) design. I had no freaking
clue as to what I was looking at or how it was going to become part of
my life. But in theory, I did have a chance to voice a concern with
the design. It appeared much better than the old 4 prong phone jacks.
*From:* Ken Hohhof <mailto:af...@kwisp.com>
*Sent:* Saturday, October 24, 2015 5:37 PM
*To:* af@afmug.com <mailto:af@afmug.com>
*Subject:* Re: [AFMUG] B11 copper v fiber
Sometimes I want to go back in a time machine and kill the person who
decided the industry standard Ethernet connector would be a modular
plug. It’s not the most robust connector. Especially in an adverse
environment.
So I’m not thrilled to see it become a standard power connector.
Kind of how micro-USB because the standard charging connector.
Anderson Powerpoles are nice DC power connectors, I don’t think we’ll
see those on radios any time soon. The standard seems to be those
Phoenix connectors or whatever is the correct name for them. Trango
and Ceragon use them, I think it might be the same type as on a
SyncInjector. They seem to have an option for captive screws to lock
them in place.
*From:* Mike Hammett <mailto:af...@ics-il.net>
*Sent:* Saturday, October 24, 2015 4:54 PM
*To:* af@afmug.com <mailto:af@afmug.com>
*Subject:* Re: [AFMUG] B11 copper v fiber
I'm not sure there are any practical implementations of fiber and DC
that I haven't already gone over with Jaime... more than once.
-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com
<https://www.facebook.com/ICSIL><https://plus.google.com/+IntelligentComputingSolutionsDeKalb><https://www.linkedin.com/company/intelligent-computing-solutions><https://twitter.com/ICSIL>
Midwest Internet Exchange
http://www.midwest-ix.com
<https://www.facebook.com/mdwestix><https://www.linkedin.com/company/midwest-internet-exchange><https://twitter.com/mdwestix>
------------------------------------------------------------------------
*From: *"Jeremy" <jeremysmi...@gmail.com>
*To: *af@afmug.com
*Sent: *Saturday, October 24, 2015 12:17:18 PM
*Subject: *Re: [AFMUG] B11 copper v fiber
I can see your point, but it seems that you are missing part of the
idea of why we run direct DC and fiber, to avoid ESD issues frying the
sensitive Ethernet components. We already have direct -48vdc and
fiber sitting in our tower box, ready for future expansion. You
simply needed one additional small connector and you could have made
everyone happy. There are already a number of manufacturers out there
who not only support POE, but also have direct DC connectors as well.
AFAIK, The connector part is less than a buck. Consider this my
request for a future hardware revision that adds the small direct DC
connector as an option.
On Sat, Oct 24, 2015 at 10:34 AM, Jaime Fink <ja...@mimosa.co
<mailto:ja...@mimosa.co>> wrote:
Yes it is powered via 802.3at PoE. You do not need Ethernet PHY
operational though once you've configured the SFP, it just accepts
power through the circuit at that point.
Unfortunately not everyone has gone to fiber yet so PoE is still
needed for some transitionally.
Jaime
On Oct 24, 2015, at 9:19 AM, Jeremy <jeremysmi...@gmail.com
<mailto:jeremysmi...@gmail.com>> wrote:
I do not see the direct DC connector on any of the marketing
photos. Do these still need to be powered via POE?
On Wed, Oct 21, 2015 at 4:40 PM, Jaime Fink <ja...@mimosa.co
<mailto:ja...@mimosa.co>> wrote:
Thanks Mike.
Yes the aggregates Mike quoted are roughly correct as
well, but…it’s a bit different when you’re using our
Auto-TDMA mode. Assuming you’re not fully loaded, users
running speedtests get results at a Gigabit in up and down
direction and around 1 ms RT latency, so it feels higher
speed aggregate since we’re adapting to actual usage on
the fly. In other words we fill up the underutilized
directional demand with the direction that’s in demand
(usually downstream of course).
That’s opposed to locking down the MAC/PHY layer at 50/50
like FDD does, or 75/25 TDMA modes, etc.
Jaime
From: Af <af-boun...@afmug.com
<mailto:af-boun...@afmug.com>> on behalf of Mike Hammett
<af...@ics-il.net <mailto:af...@ics-il.net>>
Reply-To: "af@afmug.com <mailto:af@afmug.com>"
<af@afmug.com <mailto:af@afmug.com>>
Date: Wednesday, October 21, 2015 at 2:33 PM
To: "af@afmug.com <mailto:af@afmug.com>" <af@afmug.com
<mailto:af@afmug.com>>
Subject: Re: [AFMUG] B11 copper v fiber
Yes.
1200 - 1500 aggregate.
-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com
------------------------------------------------------------------------
*From: *"TJ Trout" <t...@voltbb.com <mailto:t...@voltbb.com>>
*To: *af@afmug.com <mailto:af@afmug.com>
*Sent: *Wednesday, October 21, 2015 2:00:16 PM
*Subject: *Re: [AFMUG] B11 copper v fiber
Jamie;
Is the b11 based on 802.11 silicone?
Is the b11 capable of 750fd or 1500fd?
Thank you
On Wed, Oct 21, 2015 at 11:29 AM, Rory Conaway
<r...@triadwireless.net <mailto:r...@triadwireless.net>>
wrote:
And Mike quits sending you nasty emails because you
think copper was sent to us by an evil entity from
another dimension.
Rory
*From:*Af [mailto:af-boun...@afmug.com
<mailto:af-boun...@afmug.com>] *On Behalf Of *Adam Moffett
*Sent:* Wednesday, October 21, 2015 11:27 AM
*To:* af@afmug.com <mailto:af@afmug.com>
*Subject:* Re: [AFMUG] B11 copper v fiber
Two reasons:
1) Peace of mind regarding /future/ EMI problems
2) It's pretty sexy these days to tell people you have
fiber to the antenna,
On 10/21/2015 1:35 PM, Scott Vander Dussen wrote:
Mimosa recommends these SFP modules:
AFBR-5710APZ
<http://www.mouser.com/ProductDetail/Avago-Technologies/AFBR-5710APZ/?qs=%2fha2pyFaduhaC58MVLqFl44%252bx6hS5cz1YhojZqdUVyI7Wp%252bPDPG4Rg%3d%3d>ï¿1Ž2
1.25 GBd MMF Transceiver for Gigabit Ethernet,
SFP, Bail de-latch, Ext Temp (-40 to 85C)
AFCT-5715ALZ
<http://www.mouser.com/ProductDetail/Avago-Technologies/AFCT-5715ALZ/?qs=%2fha2pyFadujhJvt9bnk9ES81EX7WBD7ZrbBItK6kCZLHNEN0X0r%2fGA%3d%3d>
1.25 GBd SMF Transceiver with DMI for Gigabit
Ethernet, SFP, Std de-latch, Ext Temp (-40 to 85C)
FTLF8519P3BTL
<http://www.mouser.com/ProductDetail/Finisar/FTLF8519P3BTL/?qs=%2fha2pyFaduh7nd4n5kIrSHIvC1uJRiq8EwAcMil5upKcc76M2JIwDQ%3d%3d>
Fiber Optic Transmitters, Receivers, Transceivers
GigE 1x/2x FC, 2.129 Gb/s trnscvr, 550m
FTLF1318P3BTL
<http://www.mouser.com/ProductDetail/Finisar/FTLF1318P3BTL/?qs=%2fha2pyFaduikXVilIKTQvJhiq4n%2fsUYWQAU7K0qEJnA1f%252bqIw1quUw%3d%3d>
Fiber Optic Transmitters, Receivers, Transceivers
1310nmFP GigE 1x FC 1.25Gb/s trnscvr10km
ï¿1Ž2
Assuming cable length and EMI are not issues, is
there any benefit to using fiber over copper?
ï¿1Ž2
`S
