Re: Time and Timing Servers

[Ryan Wilkins <ryan () deadfrog net>]

Yes, expect CDMA cellular to disappear before too long.

Verizon is shutting down their CDMA network at the end of this year.

Sprint announced in February 2019 that it is no longer activating CDMA-only devices starting May 1 2019.  No sunset 
date has been announced yet but suffice it to say the ball is in motion to sunset their CDMA network.

Any of the regional carriers that run CDMA networks are likely to follow suit in short order.

Ryan Wilkins

> On Jul 11, 2019, at 10:50 AM, Mike Hammett <nanog () ics-il net> wrote:
>
> Isn't a major problem with CDMA-based sources that the networks they depend on are getting shut down?
>
>
>
> -----
> Mike Hammett
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> From: "Ethan O'Toole" <telmnstr () 757 org>
> To: "Mike Hammett" <nanog () ics-il net>
> 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 antenna), will provide traditional NTP services, and will 
> > provide a timing signal that my Metaswitch can work with.
>
> GPS inside a building probably isn't going to work unless you have the 
> antenna up against a window.
>
> Look at CDMA NTP Servers like the EndRun Sonoma. They use the cellular 
> network which requires accurate timing and has good building penetration.
>
>                  - Ethan O'Toole