From: "Majdi S. Abbas" < m...@latt.net >
To: "Mike Hammett" < na...@ics-il.net >
Cc: nanog@nanog.org
Sent: Thursday, July 11, 2019 9:54:26 AM
Subject: Re: Time and Timing Servers
On Thu, Jul 11, 2019 at 09:29:46AM -0500, Mike Hammett wrote:
> There were a lot of
On 7/15/2019 1:02 PM, Jay R. Ashworth wrote:
- Original Message -
From: "Majdi S. Abbas"
Not only are you dependant on Sprint if you go that route
(Verizon is already pulling the plug on CDMA this year.), it was never
any better than +/- 10 ms or so. You can get that via NTP
- Original Message -
> From: "Forrest Christian (List Account)"
> A couple of thoughts here:
>
> 1) I know at some sites there is an external, shared, GPS antenna which is
> run through a distribution amplifier to clients. Worth checking into just
> in case it exists and they forgot to
- Original Message -
> From: "Majdi S. Abbas"
> Not only are you dependant on Sprint if you go that route
> (Verizon is already pulling the plug on CDMA this year.), it was never
> any better than +/- 10 ms or so. You can get that via NTP pointed at
> the Internet.
Oh, is *that* w
Subject: Re: Time and Timing Servers Date: Thu, Jul 11, 2019 at 09:11:13PM
+0200 Quoting Karsten Elfenbein (karsten.elfenb...@gmail.com):
> I think you are referencing their chip scale atomic clocks. Which are very
> frequency stable. But still need phase alignment. (Mobile UPS anyone?)
T
Subject: Re: Time and Timing Servers Date: Thu, Jul 11, 2019 at 10:23:41AM
-0500 Quoting Mike Hammett (na...@ics-il.net):
> I'll look into Meinberg.
Meinberg are nice people with good hardware. They can do 2048KHz from
GPS and other timing signals, for instance. Then again, some router
<https://www.linkedin.com/company/midwest-internet-exchange>
> <https://twitter.com/mdwestix>
> The Brothers WISP <http://www.thebrotherswisp.com/>
> <https://www.facebook.com/thebrotherswisp>
> <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg>
> ---
ke Hammett
Intelligent Computing Solutions
Midwest Internet Exchange
The Brothers WISP
- Original Message -
From: ke...@contoocook.net
To: "Karsten Elfenbein" , "Mike Hammett"
Cc: "NANOG"
Sent: Thursday, July 11, 2019 3:49:35 PM
Subject: Re: Ti
I know that many places hosting telecom gear provide "BITS Clock" this is a DS1 with timing.Ask about that, it's an alternative to providing your own.- Original Message -From: "Karsten Elfenbein" To: "Mike Hammett" Sent: Thursday, July 11 2019 03:22:01 PMSubject: Re: Time and Timing Servers
Ethan O'Toole :
> > I'm looking for a device that can receive GPS inside a building without
> > the assistance of an external antenna (Frontier says they no longer
> > allow external antenna), will provide traditional NTP services, and will
> > provide a timing signal that my Metaswitch can work wi
I think you are referencing their chip scale atomic clocks. Which are very
frequency stable. But still need phase alignment. (Mobile UPS anyone?)
Maybe some peers can provide transparent or boundry clock support. Or
someone close by in the DC can add an antenna splitter.
Karsten
Mike Hammett sc
> On Jul 11, 2019, at 11:23 AM, Mike Hammett wrote:
>
> I'll look into Meinberg.
>
> I recent thread mentioned high-sensitivity receivers often allow GPS to work
> inside. Obviously "inside" has a lot of definitions.
>
> I will need this facility for the TDM timing signals. It's a central offi
Isn't a major problem with CDMA-based sources that the networks they depend on
are getting shut down?
If so, I would imagine there will be timing servers based on the
replacement cellular technology. Might ask EndRun or one of their
competitors about it.
- Ethan
hris Boyd"
To: "NANOG"
Sent: Thursday, July 11, 2019 10:03:02 AM
Subject: Re: Time and Timing Servers
> On Jul 11, 2019, at 10:29 AM, Mike Hammett wrote:
>
> I'm looking for a device that can receive GPS inside a building without the
> assistance of an exter
ike Hammett"
Cc: nanog@nanog.org
Sent: Thursday, July 11, 2019 9:54:26 AM
Subject: Re: Time and Timing Servers
On Thu, Jul 11, 2019 at 09:29:46AM -0500, Mike Hammett wrote:
> There were a lot of NTP threads several weeks ago, but I didn't get an answer
> to my question amongst all o
On Thu, Jul 11, 2019 at 10:30 AM Mike Hammett wrote:
> There were a lot of NTP threads several weeks ago, but I didn't get an
> answer to my question amongst all of the other chatter.
>
> I'm looking for a device that can receive GPS inside a building without
> the assistance of an external anten
> On Jul 11, 2019, at 10:29 AM, Mike Hammett wrote:
>
> I'm looking for a device that can receive GPS inside a building without the
> assistance of an external antenna (Frontier says they no longer allow
> external antenna), will provide traditional NTP services, and will provide a
> timing
tps://twitter.com/mdwestix>
> The Brothers WISP <http://www.thebrotherswisp.com/>
> <https://www.facebook.com/thebrotherswisp>
> <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg>
> From: "Ethan O'Toole"
> To: "Mike Hammett"
>
On Thu, Jul 11, 2019 at 09:50:48AM -0500, Mike Hammett wrote:
> Isn't a major problem with CDMA-based sources that the networks
> they depend on are getting shut down?
Domestically, yes.
Not only are you dependant on Sprint if you go that route
(Verizon is already pulling the pl
On Thu, Jul 11, 2019 at 09:29:46AM -0500, Mike Hammett wrote:
> There were a lot of NTP threads several weeks ago, but I didn't get an answer
> to my question amongst all of the other chatter.
>
> I'm looking for a device that can receive GPS inside a building without the
> assistance of an ext
Mike Hammett"
Cc: nanog@nanog.org
Sent: Thursday, July 11, 2019 9:46:24 AM
Subject: Re: Time and Timing Servers
> I'm looking for a device that can receive GPS inside a building without
> the assistance of an external antenna (Frontier says they no longer
> allow external ant
I'm looking for a device that can receive GPS inside a building without
the assistance of an external antenna (Frontier says they no longer
allow external antenna), will provide traditional NTP services, and will
provide a timing signal that my Metaswitch can work with.
GPS inside a building p
22 matches
Mail list logo
