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

"Belling, Thomas (NSN - DE/Munich)" <thomas.belling@nsn.com> Fri, 14 February 2014 13:14 UTC

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From: "Belling, Thomas (NSN - DE/Munich)" <thomas.belling@nsn.com>
To: ext Tom Taylor <tom.taylor.stds@gmail.com>, "dispatch@ietf.org" <dispatch@ietf.org>
Thread-Topic: [dispatch] SIP and GSM/UMTS with OpenBTS
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Date: Fri, 14 Feb 2014 13:13:48 +0000
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Archived-At: http://mailarchive.ietf.org/arch/msg/dispatch/yocgmclFBxnlsIHOnAWp3iNJqu4
Subject: Re: [dispatch] SIP and GSM/UMTS with OpenBTS
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Dear Tom,

your proposal for technical work seems to be that you want to describe interworking between 3GPP radio protocols and SIP?

Would IETF or 3GPP be a more appropriate organization for that?
IETF owns SIP but lacks expertise for the radio protocols.
3GPP knows their own protocols, and also has a certain SIP expertise by now.
3GPP also has experience with regulatory issues and interference problems that have been mentioned, and works based on operator requirements (that are your target customers based on your last explanations?). My conclusion thus is that 3GPP appears to be the more appropriate forum for such discussions.

By the way, there is already a comparable 3GPP spec, TS 29.292, although it was written for a more specific IMS related use case.

BR, Thomas


----------------------------------
Dr. Thomas Belling 
3GPP Standardisation
NSN



-----Original Message-----
From: dispatch [mailto:dispatch-bounces@ietf.org] On Behalf Of ext Tom Taylor
Sent: Friday, February 14, 2014 1:12 PM
To: dispatch@ietf.org
Subject: Re: [dispatch] SIP and GSM/UMTS with OpenBTS

Your interventions in particular smack of an attempt to suppress potential competition through intimidation. I'll let you deal with the legalities of that. My personal opinion is that this sort of discussion does not belong on IETF lists. I support Mary's viewpoint that our role is technical only. Let the application find its own place after we do our job.

Tom Taylor

On 14/02/2014 2:57 AM, Ivo Sedlacek wrote:
> 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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