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Re: [dispatch] SIP and GSM/UMTS with OpenBTS

Ivo Sedlacek <ivo.sedlacek@ericsson.com> Fri, 14 February 2014 07:57 UTC

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From: Ivo Sedlacek <ivo.sedlacek@ericsson.com>
To: Tim Panton new <thp@westhawk.co.uk>
Thread-Topic: [dispatch] SIP and GSM/UMTS with OpenBTS
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Date: Fri, 14 Feb 2014 07:57:39 +0000
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References: <040E1A40-BC55-4CFC-834A-FC958DEFDE25@rangenetworks.com> <00C069FD01E0324C9FFCADF539701DB3BBF23E22@sc9-ex2k10mb1.corp.yaanatech.com> <CAHBDyN5-O3pNury3RUNzstGHO8NCq6pV3ewHt_Yrxjd1k-if5Q@mail.gmail.com> <948FB37B-F2D4-4462-8B29-D03FDF65215F@rangenetworks.com> <93B4EA30-0734-439E-A129-B3B91B077720@rangenetworks.com> <949EF20990823C4C85C18D59AA11AD8B12F6C3@FR712WXCHMBA11.zeu.alcatel-lucent.com> <2B05935E-EB65-4B36-ABD3-09DE9921F8A7@westhawk.co.uk> <949EF20990823C4C85C18D59AA11AD8B12F7CE@FR712WXCHMBA11.zeu.alcatel-lucent.com> <CACy T-3mAJX4uPDcXDz7j6xOAA+OSDoRguQ51EvZk9=LTG8KzJQ@mail.gmail.com> <949EF20990823C4C85C18D59AA11AD8B12FA06@FR712WXCHMBA11.zeu.alcatel-lucent.com> <DE4C1B56-0D67-4210-9FFA-EC0BC866E081@westhawk.co.uk> <201402121601.s1CG1q0W4835781@shell01.TheWorld.com> <39B5E4D390E9BD4890E2B3107900610112662068@ESESSMB301.ericsson.se> <017BBEA0-CDBE-453D-9E98-77F470BC9181@rangenetworks.com> <949EF20990823C4C85C18D59AA11AD8B1319E6@FR712WXCHMBA11.zeu.alcatel-lucent.com> < 52FCF23D.7070608@iptel.org> <39B5E4D390E9BD4890E2B3107900610112662679@ESESSMB301.ericsson.se> <0A527A1E-0789-41D8-902B-A1B12F03E69C@westhawk.co.uk>
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Cc: "dispatch@ietf.org" <dispatch@ietf.org>
Subject: Re: [dispatch] SIP and GSM/UMTS with OpenBTS
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Hello Tim and all,

> Apples and oranges - If I want a continent spanning, roaming capable billion dollar GSM network, then I need an IMS system.
> If I want an Um to SIP gateway I can run off solar power and hang in a tree, I'll go for an openBTS like solution.

If you want an Um to SIP gateway (for whatever purpose), you need a license.  To get a license, you will need to satisfy regulator's requirements. 

You still have not provided any references to regulators' document stating that a GSM band is free in any country.

You still have not explain how such BTS "running off solar power and hanging in a tree" does not interfere with other BTSs hanging on the next tree.

So, I am afraid, the BTS and Um To SIP gateway hanging will be switched off pretty quickly due to being illegal or causing interferences with other GSM nodes.

Kind regards

Ivo Sedlacek

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