On Wed, 2005-10-12 at 17:46 -0700, Paul Mahler wrote: > You need about 30MHz per channel. That means the Soekris can only handle part > of a T1, it will never handle a quad span. > > Paul >
How was that determined? I have a problem with a plain number like that, which may have been taken into account, why I am asking... Different cpus operate differently, taking more or less time to complete certain functions. Instruction optimization can go a long way if those instructions are used (not terribly likely if its just pushing bits but there are some for just that). Additionally there is no codec processing (presumably) with TDMoE, does the 30MHz take into account any codec processing or is it literally 30MHz (on what cpu class?!) for just pushing bits? There are other factors, but you did say 'about' so they are optional to this conversation, ie other IRQs on the box, potential for device polling, etc. A tuned system for that specific task (pushing bits between a TDM card and ethernet via TDMoE) may be able to operate at a lower clock speed per channel, but that isnt as important for the initial questions. -- Trixter http://www.0xdecafbad.com Bret McDanel UK +44 870 340 4605 Germany +49 801 777 555 3402 US +1 360 207 0479 or +1 516 687 5200 FreeWorldDialup: 635378
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