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