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<BODY bgColor=#ffffff>>Again, the main reason for me to require a higher end
CPU is audio<BR>>compression. But I also want the system to be run by a
standard OS. It<BR>>needs to be easy to add your own application there.<BR>
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<DIV><FONT face=Arial size=2>Mutually exclusive. I don't know any standard
OS that doesn't waste about 10 x as many CPU cycles as a SIP phone should ever
need. The problem is generalization. A standard OS is designed to
support a wide variety of devices, including a wide range of screen sizes.
The abstraction layers that make this possible often consume more CPU resources
than the application they are supporting. Most of that isn't needed for
this application. Compatibility with WXVGA isn't required. Even a
full blown file system is a luxury.</FONT></DIV>
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<DIV><FONT face=Arial size=2>Linux is about the closest thing because it can be
pared down. But it takes someone with considerable experience to know how
and what to trim. I supervised a system that used "busy box" to create a
compact system that lived on a small flash card an some RAM.</FONT></DIV>
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<DIV><FONT face=Arial size=2>As an example, I have been a Palm owner for a
number of years. I laughed when the Win CE stuff came out to
compete. The Palm OS was written for the task at hand. I could go a
week or more on a charge. The Win CE devices had to be recharged after 8
hours! Why? The OS required too much which required far more compute
power, which ate batteries.</FONT></DIV>
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<DIV><FONT face=Arial size=2>The SIP phone you propose could be done with about
1 W of power plus a couple more for backlighting. An OS based version
would start at 5 W + backlight and could easily go to 15 W or higher. Not
the end of the world, I suppose on a desk (if there aren't a hundred of them and
I'm not paying the electric bill) but a huge difference if it has to run on
batteries.</FONT></DIV>
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<DIV><FONT face=Arial size=2>Wilton</FONT></DIV>
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