Hi All,<div><br></div><div>A 5 GB data plan will suffice, 6 channels at 100 SPS, gain 1, with a c0 compression will be around 3Gb a month and at c2 about half of that for quite places. We have AT&T and Verizon plans. </div>
<div><br></div><div>For real numbers, I can mention that we are running the following setup in the field for more than a year now : 6 Channels( First three channels at highg gain), 100 SPS, c2 and our daily usage is around 120-140 Mb for a very noisy station and 60-80 Mb for quieter stations.</div>
<div><br></div><div>I asked around about the c0 and c2 mystery, back in the 80's with the 72 Series we called our compressed data c0 (C and Zero) it was a Hex value, very similar to CO for compressed, that's was probably the only compression we could talk about back then and there was no need to say Steim1, just Steim compression. Along the way we did another c1 compression for "specific reasons" and then Steim2 in which case we called it c2. So users know about c0 and c2 and don't worry about c1 and nothing beyond c2 for now.</div>
<div><br></div><div>Antonio</div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br><div><br></div><div><br><div><br></div><div><br><div class="gmail_quote">
On Fri, Feb 8, 2013 at 4:29 PM, Philip Crotwell <span dir="ltr"><<a href="mailto:crotwell@seis.sc.edu" target="_blank">crotwell@seis.sc.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div><br></div>We have been doing 3 x 100sps from refteks over cell modems with no data volume problems and accidentally had 6 x 100 sps at one station for a while. It came in fine with no "over the gigabyte limit" issues. I think we have 5Gb/month caps as well, on verizon and AT&T.<br>
<br></div>Using compression on the refteks helps alot, so use either CO or C2, but be aware that C2 for a very quiet station can pack more samples into a reftek packet than will fit into a tracebuf, resulting in the tracebuf being booted out of the system. For most normal stations this shouldn't be an issue, and in the cases where it is you can use CO or can set the gain to x32, or both.<span><font color="#888888"><br>
<br></font></span></div><span><font color="#888888">Philip<br></font></span></div><div><div><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Feb 8, 2013 at 5:19 PM, Doug Given <span dir="ltr"><<a href="mailto:given@caltech.edu" target="_blank">given@caltech.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<div><br>
Our real-world numbers from 6-channel Q330s (Steim 2
compression) show volumes of about 3.2Gb/mo or less. We have
exceeded the 5Gb/mo limit when there is some pathology at the
station that causes lots of resends. So far our carrier, Verizon,
has not dinged us for any overages.<br>
<pre cols="72">+-----------------------------------------------------------------+
| Douglas Given | Project Chief |
| U.S. Geological Survey | S. California Earthquake Monitoring |
| Caltech Seismological Lab | <a href="tel:%28626%29583-7812" value="+16265837812" target="_blank">(626)583-7812</a> FAX: <a href="tel:%28626%29583-7827" value="+16265837827" target="_blank">(626)583-7827</a> |
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+-----------------------------------------------------------------+</pre><div><div>
On 2/8/2013 1:53 PM, James H Bollwerk (jbollwrk) wrote:<br>
</div></div></div>
<blockquote type="cite"><div><div>
<div>
<p class="MsoNormal">Just getting into the cell modem game and
need help.<u></u><u></u></p>
<p class="MsoNormal">We’ll be Streaming 6 x100 sps from a
RT130-01/6 with a Raven XE (ATT provider). <u></u><u></u></p>
<p class="MsoNormal">Our university plan will allow 5GB per
billing cycle. With compression that should work.<u></u><u></u></p>
<p class="MsoNormal">Does anyone have real world data usage
numbers?<u></u><u></u></p>
</div>
<br>
<fieldset></fieldset>
<br>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><span style="font-family:arial,sans-serif;font-size:13px;border-collapse:collapse;color:rgb(34,34,34)"><p style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px">
<a name="13cbbfd32bae105a_SafeHtmlFilter_SafeHtmlFilter_137b8acfe70e601e_137b8ac06d3898d3__MailAutoSig" style="color:rgb(17,85,204)"><span style="font-size:10pt;font-family:'Courier New'">Antonio Sanchez</span></a></p>
<p style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px">
<span style="font-size:10pt;font-family:'Courier New'">REFTEK Customer Support Manager</span></p><p style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px"><b style="color:rgb(0,0,0);font-family:arial;font-size:small"><span style="font-size:10pt;font-family:Verdana,sans-serif;color:navy"><img width="222" height="55" src="https://mail.google.com/mail/u/0/?ui=2&ik=a7686b1d74&view=att&th=13cbbfd32bae105a&attid=0.1&disp=emb&realattid=24e4875993183a7f_0.2&zw&atsh=1" alt="Description: O:\REFTEK\reftek_logo _ATC(MEJ).JPG"></span></b></p>
<p style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px"><span style="font-size:10pt;font-family:'Courier New'">1600 10th Street</span><span style="font-size:10pt;font-family:'Courier New'"> Plano TX 75074 USA</span><span style="font-size:10pt;font-family:'Courier New'"></span></p>
<p style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px"><span style="font-size:10pt;font-family:'Courier New'">Ph <a value="+12144401265" style="color:rgb(17,85,204)">214 440-1265</a></span></p>
<p style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px"><span style="font-size:10pt;font-family:'Courier New'">Ph <a value="+12144401271" style="color:rgb(17,85,204)">214 440-1271</a> (direct)</span></p>
<p style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px"><span style="font-size:10pt;font-family:'Courier New'"><a href="http://www.reftek.com" style="color:rgb(17,85,204)" target="_blank">http://www.reftek.com</a></span></p>
<p style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px"><span style="font-size:10pt;font-family:'Courier New'"><a href="ftp://ftp.reftek.com" style="color:rgb(17,85,204)" target="_blank">ftp://ftp.reftek.com</a></span></p>
<p style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px">" Want to become an expert with REF TEK equipment? Attend our REF TEK</p><p style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px">
University. Follow the link on our web site <a href="http://www.reftek.com" style="color:rgb(17,85,204)" target="_blank">http://www.reftek.com</a> "</p></span>
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