<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Yes, expect CDMA cellular to disappear before too long.<div class=""><br class=""><div class="">Verizon is shutting down their CDMA network at the end of this year.</div><div class=""><br class=""></div><div class="">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.</div><div class=""><br class=""></div><div class="">Any of the regional carriers that run CDMA networks are likely to follow suit in short order.</div><div class=""><div><br class=""></div><div>Ryan Wilkins</div><div><br class=""><blockquote type="cite" class=""><div class="">On Jul 11, 2019, at 10:50 AM, Mike Hammett <<a href="mailto:nanog@ics-il.net" class="">nanog@ics-il.net</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div style="font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: arial, helvetica, sans-serif; font-size: 10pt;" class="">Isn't a major problem with CDMA-based sources that the networks they depend on are getting shut down?<br class=""><br class=""><div class=""><span name="x" class=""></span><br style="font-family: "times new roman"; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-variant-east-asian: normal; font-variant-position: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px;" class=""><br style="font-family: "times new roman"; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-variant-east-asian: normal; font-variant-position: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px;" class=""><span style="font-family: "times new roman"; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-variant-east-asian: normal; font-variant-position: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; float: none;" class="">-----</span><br style="font-family: "times new roman"; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-variant-east-asian: normal; font-variant-position: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px;" class=""><span style="font-family: "times new roman"; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-variant-east-asian: normal; font-variant-position: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; float: none;" class="">Mike Hammett</span><br style="font-family: "times new roman"; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-variant-east-asian: normal; font-variant-position: normal; 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letter-spacing: normal; line-height: normal; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px;" class=""><img src="http://www.ics-il.com/images/fbicon.png" class=""></a><a href="https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg" target="_blank" rel="nofollow noopener noreferrer" style="font-family: "times new roman"; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-variant-east-asian: normal; font-variant-position: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px;" class=""><img src="http://www.ics-il.com/images/youtubeicon.png" class=""></a><span name="x" class=""></span><br class=""></div><hr id="zwchr" class=""><div style="font-weight: normal; font-style: normal; text-decoration: none; font-family: Helvetica, Arial, sans-serif; font-size: 12pt;" class=""><b class="">From:<span class="Apple-converted-space"> </span></b>"Ethan O'Toole" <<a href="mailto:telmnstr@757.org" class="">telmnstr@757.org</a>><br class=""><b class="">To:<span class="Apple-converted-space"> </span></b>"Mike Hammett" <<a href="mailto:nanog@ics-il.net" class="">nanog@ics-il.net</a>><br class=""><b class="">Cc:<span class="Apple-converted-space"> </span></b><a href="mailto:nanog@nanog.org" class="">nanog@nanog.org</a><br class=""><b class="">Sent:<span class="Apple-converted-space"> </span></b>Thursday, July 11, 2019 9:46:24 AM<br class=""><b class="">Subject:<span class="Apple-converted-space"> </span></b>Re: Time and Timing Servers<br class=""><br class="">> I'm looking for a device that can receive GPS inside a building without<span class="Apple-converted-space"> </span><br class="">> the assistance of an external antenna (Frontier says they no longer<span class="Apple-converted-space"> </span><br class="">> allow external antenna), will provide traditional NTP services, and will<span class="Apple-converted-space"> </span><br class="">> provide a timing signal that my Metaswitch can work with.<br class=""><br class="">GPS inside a building probably isn't going to work unless you have the<span class="Apple-converted-space"> </span><br class="">antenna up against a window.<br class=""><br class="">Look at CDMA NTP Servers like the EndRun Sonoma. They use the cellular<span class="Apple-converted-space"> </span><br class="">network which requires accurate timing and has good building penetration.<br class=""><br class=""> - Ethan O'Toole</div></div></div></blockquote></div><br class=""></div></div></body></html>