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From: Marcel Holtmann <marcel@holtmann.org>
To: BlueZ development <bluez-devel@lists.sourceforge.net>
In-Reply-To: <b5dccebe0702090245o53dd36cwb62836b7d2b234d2@mail.gmail.com>
References: <b5dccebe0702090245o53dd36cwb62836b7d2b234d2@mail.gmail.com>
Date: Mon, 12 Feb 2007 20:42:38 +0100
Message-Id: <1171309358.11774.20.camel@violet>
Mime-Version: 1.0
Subject: Re: [Bluez-devel] phone model and link manager version
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Hi Mikael,

> I wonder if there is you think there is any correlation between the
> Link Manager Protocol
> (LMP) Subversion and the model of a bluetooth phone. I mean, if I find
> out the LMP subversion of a remote device with for example hcitool,
> like this:
> 
> sudo hcitool info <bdaddr>
> 
> Requesting information ...
> ...
> LMP Version: 1.2 (0x2) LMP Subversion: 0x41c
> 
> Can this subversion be used to identify the model of the phone?
> 
> If not, can it be used to suggest that the phone is any of a small set
> of models?
> 
> If firmware updates are being made on the phone, will that affect the
> LMP subversion?
> 
> What process inside a phone manufacturer company decide that a
> Bluetooth chip with a certain LMP subversion ends up in a specific
> model? Is it just related to when the phone happened to be produced or
> is it somehow related to the model?

on some phones yes, on others no. The value is Bluetooth chip
manufacturer specific and nowadays doesn't tell you any details about
the phone.

Regards

Marcel



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