[ANSS-netops] Cell modem?

[Philip Crotwell]

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.

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.

Philip


On Fri, Feb 8, 2013 at 5:19 PM, Doug Given <given at caltech.edu> wrote:

>
>     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.
>
> +-----------------------------------------------------------------+
> | Douglas Given             | Project Chief                       |
> | U.S. Geological Survey    | S. California Earthquake Monitoring |
> | Caltech Seismological Lab | (626)583-7812  FAX: (626)583-7827   |
> | 525 So. Wilson Ave.       | given at caltech.edu or doug at usgs.gov  |
> | Pasadena, CA  91106       | http://earthquake.usgs.gov          |
> +-----------------------------------------------------------------+
>
> On 2/8/2013 1:53 PM, James H Bollwerk (jbollwrk) wrote:
>
>  Just getting into the cell modem game and need help.****
>
> We’ll be Streaming 6 x100 sps from a RT130-01/6 with a Raven XE (ATT
> provider).  ****
>
> Our university plan will allow 5GB per billing cycle.  With compression
> that should work.****
>
> Does anyone have real world data usage numbers?****
>
>
> _______________________________________________
> ANSS-netops mailing listANSS-netops at geohazards.usgs.govhttps://geohazards.usgs.gov/mailman/listinfo/anss-netops
>
>
>
> _______________________________________________
> ANSS-netops mailing list
> ANSS-netops at geohazards.usgs.gov
> https://geohazards.usgs.gov/mailman/listinfo/anss-netops
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://geohazards.usgs.gov/pipermail/anss-netops/attachments/20130208/f834b4f8/attachment.html>