[Asterisk-Users] Re: Open source IP phone, maybe?

[Gene Kochanowsky]

I concur with Jose. The Atmel AVR series packs a lot of bang for the buck. They
also come in a 3.3v low power version for use in battery powered systems.

Gene

-----Original Message-----
From: Leo Ann Boon [mailto:leo at innovax.com.sg]
Sent: Tuesday, August 19, 2003 7:21 PM
To: asterisk-users at lists.digium.com
Subject: Re: [Asterisk-Users] Re: Open source IP phone, maybe?


Ubicom's Scenix IP2K. Sxdesign has an SIP phone platform using that chip
http://www.sxdesign.com/index.php?page=solutions&submnu=voip

Jose Ildefonso Camargo Tolosa wrote:

> Hi!
>
> I think it is a great idea.
>
> The DS80C400 needs external memory, and/or flash.  It have the 
> Ethernet integrated, but it is really slow (it is 8051 architecture), 
> and yes, I know it can go up ti 75Mhz, but only gives 18MIPS max.  I 
> would use ATmega128 from atmel (16MIPS at only 16Mhz), take a look at: 
> http://www.ethernut.de (project using mega128 with Ethernet, includes 
> schematics).
>
> It can, in fact (personal experience) give about 0.7 instructions per 
> clock cycle (media).  About 11MIPS @ 16Mhz, or at 14.7456Mhz (for 
> RS-232 standard speeds) 10.3MIPS.
>
> There is a free C compiler (very good, I must add).  See: 
> http://winavr.sf.net OR http://www.nongnu.org/avr-libc/ Also see: 
> http://www.atmel.com and go the the products -> Microcontrollers -> 
> AVR 8-bit RISC and take a look around.
>
> Or: http://www.avrfreaks.net/ (a users web site)
>
> If you like FPGAs and/or ASICs, you could go to: http://www.opencores.org
>
> Hope this may help you, I would take the project, but I have no time 
> righ now.  Maybe in about 1.5 months, when my degree work is done.
>
> c-ya!
>
> Ildefonso Camargo
> icamargo at unet.edu.ve
> ildefonso_camargo at yahoo.com
>
>> Message: 3
>> Date: Tue, 19 Aug 2003 13:35:53 -0500 (CDT)
>> From: James Sharp <jsharp at psychoses.org>
>> To: asterisk-users at lists.digium.com
>> Subject: [Asterisk-Users] Oen source IP phone, maybe?
>> Reply-To: asterisk-users at lists.digium.com
>>
>>
>> Its another one of my "If I only had time...damn this sleep thing" 
>> ideas, but I really wonder how hard/cost effective it would be to 
>> build an open source IP phone or phone adapter (ala ATA).
>>
>> In about 20 minutes of mulling and research, I figure you could do it 
>> for about $40 in parts plus coding time...
>>
>> 1 DS80C400 Ethernet enabled microcontroller with built in IPV4/V6 
>> stack $10
>> 1 DSP56K hardware DSP (you may even be able to dispense with this if 
>> the C400 is fast enough to do the codecing...then you just need a 8 
>> or 16 bit DAC/ADC) $10
>> Misc parts/case/whatnot $20.
>>  
>>
>
>
>
>
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> Asterisk-Users at lists.digium.com
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>

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