Depending on how heavy the use would be, there are two choices, the standard one, that Joshua already explained and the following dirty hack:
If it is just for emergency then the HLR can already tell you which mobiles are connected to a given cell id on a BTS. The BTS coordinates should also be known to the operator, so the procedure does not even need to involve a geospatial enabled database or a spatial query. The drawback is that those kind of requests tend to cause a significant performance hit on the HLR, last time I tested (on a GSM network, 3 years ago, Siemens equipment) it spent 8 seconds to just give me the complete status of one mobile. Ariel. On Thu, Oct 23, 2008 at 3:33 PM, Joshua Lieberman <[EMAIL PROTECTED]> wrote: > Cameron, > > The relevant product may be an OpenLS Gateway Server, which is sold by > several vendors including ESRI and deCarta. It is intended to sit at a > telco and collect positioning information from other position- > determining products and systems, then provide an API abstracted from > the positioning method for including location with LBS services > invoked by the phone user. The standard Gateway Service (OGC) > interface doesn't seem to include a polygon query, but that might be > added by a particular vendor, or it might be feasible to harvest the > locations periodically into PostGIS, etc. > > Cheers, > > Josh > > On Oct 23, 2008, at 4:08 PM, Cameron Shorter wrote: > > > The question stems from discussions about addressing an emergency > > scenario. > > > > Tom Longson (nym) wrote: > >> Telcos could probably triangulate all their cellphones by cell tower > >> ids. Finding out which ones are within a polygon is trivial at that > >> point. > >> > >> My question to you though is, why do you want to do this? > >> > >> Tom Longson > >> http://truefalsemaybe.com/ > >> > >> On Thu, Oct 23, 2008 at 12:33 PM, Cameron Shorter > >> <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>> wrote: > >> > >> Jeffrey, you have got it. > >> The question originates from a telco so privacy is not my problem. > >> I probably should rephrase the question as "Are there any > >> systems for > >> telcos which allow the telco to select all their mobile phones > >> within a > >> polygon area?" > >> > >> Jeffrey Johnson wrote: > >>> If I understand correctly, Cameron is asking how to ask the telco > >>> which phones are in a particular polygon at a particular time. Am I > >>> right? If this list could be determined by alternate methods > >>> (registered zip codes, checkins etc), there are any number of > >> 'normal' > >>> methods to send these phones an sms. The difficult bit is to > >> find out > >>> ALL the phones in a particular polygon at a particular time (not > >> just > >>> the ones that have registered their location with a particular app), > >>> and seems to me you are going to have ask your friendly telco > >> for that > >>> kind of thing, and I seriously doubt they are gnna help. > >>> > >>> ? > >>> > >>> Jeff > >>> > >>> On Thu, Oct 23, 2008 at 9:22 AM, Marc Pfister > >> <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>> wrote: > >>> > >>>> On the more of the phone side of things, you could do it with the > >>>> Asterisk open-source PBX. It does some basic SMS stuff and > >> there are > >>>> add-ins that extend the functionality further. > >>>> > >>>> Marc > >>>> > >>>> > >>>>> -----Original Message----- > >>>>> From: [EMAIL PROTECTED] > >> <mailto:[EMAIL PROTECTED]> [mailto:geowanking- > >> <mailto:geowanking-> > >>>>> [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>] On > >> Behalf Of Cameron Shorter > >>>>> Sent: Wednesday, October 22, 2008 8:08 PM > >>>>> To: [email protected] <mailto:[email protected]> > >>>>> Subject: [Geowanking] SMSing all phones in a polygon area? > >>>>> > >>>>> Hi, > >>>>> Does anyone know of software or systems which can send SMS > >> messages to > >>>>> all phones in an operator specified polygon area? > >>>>> > >>>>> -- > >>>>> Cameron Shorter > >>>>> Geospatial Systems Architect > >>>>> Tel: +61 (0)2 8570 5050 > >>>>> Mob: +61 (0)419 142 254 > >>>>> > >>>>> Think Globally, Fix Locally > >>>>> Geospatial Solutions enhanced with Open Standards and Open Source > >>>>> http://www.lisasoft.com > >>>>> > >>>>> _______________________________________________ > >>>>> Geowanking mailing list > >>>>> [email protected] <mailto:[email protected]> > >>>>> http://lists.burri.to/mailman/listinfo/geowanking > >>>>> > >>>> _______________________________________________ > >>>> Geowanking mailing list > >>>> [email protected] <mailto:[email protected]> > >>>> http://lists.burri.to/mailman/listinfo/geowanking > >>>> > >>>> > >>> _______________________________________________ > >>> Geowanking mailing list > >>> [email protected] <mailto:[email protected]> > >>> http://lists.burri.to/mailman/listinfo/geowanking > >>> > >> > >> > >> -- > >> Cameron Shorter > >> Geospatial Systems Architect > >> Tel: +61 (0)2 8570 5050 > >> Mob: +61 (0)419 142 254 > >> > >> Think Globally, Fix Locally > >> Geospatial Solutions enhanced with Open Standards and Open Source > >> http://www.lisasoft.com > >> > >> _______________________________________________ > >> Geowanking mailing list > >> [email protected] <mailto:[email protected]> > >> http://lists.burri.to/mailman/listinfo/geowanking > >> > >> > >> ------------------------------------------------------------------------ > >> > >> _______________________________________________ > >> Geowanking mailing list > >> [email protected] > >> http://lists.burri.to/mailman/listinfo/geowanking > > > > > > -- > > Cameron Shorter > > Geospatial Systems Architect > > Tel: +61 (0)2 8570 5050 > > Mob: +61 (0)419 142 254 > > > > Think Globally, Fix Locally > > Geospatial Solutions enhanced with Open Standards and Open Source > > http://www.lisasoft.com > > > > > > _______________________________________________ > > Geowanking mailing list > > [email protected] > > http://lists.burri.to/mailman/listinfo/geowanking > > _______________________________________________ > Geowanking mailing list > [email protected] > http://lists.burri.to/mailman/listinfo/geowanking >
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