I am hoping for some changes on the cmm4 units.
1) some kind of snmp for logging voltage
2)GigE support
3) Keep TVSS
Once this comes around I will buy more of them.
They are great for my 450 APs we have.



On 6/3/2015 3:13 PM, Josh Luthman wrote:
>Thoughts?

Don't buy a CMM4.


Josh Luthman
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On Wed, Jun 3, 2015 at 4:07 PM, Forrest Christian (List Account) <[email protected] <mailto:[email protected]>> wrote:

    On the cambium ask the synchronization experts thing I'm doing
    someone pointed out the section in the ePMP manual talking about
    frequency reuse. I had to go look since I had somehow missed that
    section.   In case you haven't seen it, there's a deep discussion
    about the proper settings when you have a "mixed" network of
    internal GPS, CMM3 and CMM4. (See Page 94 in the current
    release).   I admit my ignorance and I hadn't seen this yet, but.....

    All I have to say is this:  WTF Cambium?

    Ok, I know the dirty little secret that the CMM3 and CMM4 produce
    different timing pulses.   Obviously different enough that it
    matters in the ePMP world. But the difference is easy enough to
    fix...  add a fixed amount of delay which varies based on the
    timing source.   They already have to delay the GPS timing signal
    to match the CMM4.    Why not delay the two sources which are
    'early' to match the 'late' source? Or even better, fix the CMM4
    so it matches every other sync source on the planet - I'm shocked
    this hasn't already been done.   Ok, I get it, it might be a
hardware limitation which prevents one or both of the solutions. But come on, really?

    For the record the syncinjectors currently produce "CMM3" timing,
    not "CMM4".  Since it's obvious that the difference matters now,
    I'm considering adding a software witch which allows this to be
    configured so you don't have to deal with a 'mixed' timing source
    since it seems like a CMM4 and internal GPS are identical.  This
    should permit better operation when you have to switch between an
    internal GPS and a SyncInjector.

    Thoughts?

-- *Forrest Christian* /CEO//, PacketFlux Technologies, Inc./
    Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602
    [email protected] <mailto:[email protected]> |
    http://www.packetflux.com <http://www.packetflux.com/>
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