[asterisk-users] Stable clock with 2.6 and without Digium hardware.

[zoachien at securax.org]

Haha cool, I'm the Belgian guy in Sofia you've met before, i asked for 
exactly the same reason as you :)

Zoa.

Anton Tinchev wrote:
> Zoa wrote:
>
>> Can you tell us how you do the testing ?
> 3-4 different ways. All gives same results, so test are pretty valid.
>
> 1. Interrupt counting inside the PC.
> 2. TDMoE packet counting on the switch.
> 3. External TDMoE equipment connected thru extreme network swich.
> The card of the PC and the device only connected to the switch. The 
> switch filters all packets except TDMoE to de device.
> Calibrated oscilloscope conected to the interupt leg of the network 
> chip. All coalescing/etc disabling.
> 4. Diagnostic results from firmware of the device.
> 5. ToDo test - oscilloscope directly conected to pads inside the PC, 
> but needs mechanical work for each platform/type.
> 6. ToDo test - some driver relays the clock to simple hardware card in 
> the PC and oscilloscope connected to it.
>
> All 4 tests reports same clock difference/clock misses etc.
> Tested at 3-4 types of hardware - different chipsets/processors. Same 
> results. The are sheduled tests to around 30 more platforms, but 
> pretty sure that the results will be similar.
>
> P.S.
> The device is TDMoE FXS/FXO modular channel bank currently ending 
> development and starting production.
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