[conspire] (forw) Re: [ILUG] Android gone Free

[Ruben Safir]

Rick Moen wrote:
> Quoting Daniel Gimpelevich (daniel at gimpelevich.san-francisco.ca.us):
>
>   
>> From what I heard before T-Mo picked up Android, it was already like 
>> that. This, if anything, ensures that OpenMoko is NOT dead in the water. 
>>     
>
> Interesting points.
>
> I rather liked this response to the original poster, though, which
> suggests a different approach:
>
>  From: Michael Watterson <watty at eircom.net>
>  To: john.looney at gmail.com
>  Cc: Irish Linux Users Group <ilug at linux.ie>,
>         David Dolphin <David.Dolphin at skynet.ie>
>  Subject: Re: [ILUG] Android gone Free
>
> Android is not about a Linux phone
> It's not about openess
> It's not about installing your own (I've built a handset with VOIP, it         
> just takes HW that is documented).
>
> It is all about having a CLOSED platform, a google alternative to Java.
> Android is only incidentally Linux. It could be WinMo, Symbian etc.. the
> important bit got Google and what the apps run on is the custom Google
> version of Java.
>
> If you want an Open phone build your own or buy OpenMoko. A Symbian
> phone is more open than Android.
>
> The simplest solution HW & SW wise is a VOIP handset with an                    
> EDGE/3G/HSDPA modem module (some will even let you do ordinary voice            
> calls and SMS via analogue I/O and Modem commands). Real phones have a          
> baseband CPU and don't use a Modem. You need a phone stack for them for
> GSM, GPRS, EDGE, 3G and HSDPA.  This  is a  lot more than the  "Radio           
> Drivers" which are  simple.  If you examine  phone  you can usually  see
> what  RF chips are used and  setting the  TX and RX frequency , power,
> TX/RX is  fairly easy for your own custom Radio System.  Doing it
> compliant with GSM/3G is NOT a "Radio Driver" issue, but a phone                
> protocol stack issue for the baseband or DSP/Baseband  CPU.
>
> Some phones have SDR, DSP chips to implement IQ based demodulation and
> Modulation. These chips may include a CPU or use a separate CPU for the         
> phone protocol stack.
>
> Years ago I did a lot of ISDN and also analogue trunk protocol
> signalling. All this stuff (3G/GSM) is documented. You could in theory
> write your own stack. However if you don't mind paying an extra $200,
> buy a micro sized Modem Module that is essentially a PCB version of             
> functionality of E220 USB modem etc or Sierra 850 and a general purpose         
> ARM + LCD + Touch screen (plenty available) and add Linux. No phone
> stack needed. No RF drivers needed.
>
>   

One question.  What do you connect to?

Ruben
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