[Asterisk-Users] Problems with TDM400P card

[Kim Culhan]

On Fri, April 29, 2005 4:58 pm, GEOFFREY SACHS said:
> I would also be interested in alternatives to the Tdm400p. I have had endless
> problems with a tdm400p card not being able to get the zttest numbers above
> 99.975 and as a result not being able eliminate an intermitent but consistent echo.
> I have tried to date 4 different motherboard and hardware combinations as
> well as different linux versions to no avial.I would welcome some feedback on this.

Since there appear to be several combinations of hardware and operating system
which don't work well, here is a combination which appears to work fairly well:

Intel 925XCV mb

P-4 560 (3.6 gHz)

wcfxs0: <Wildcard TDM400P REV E/F>

FreeBSD 5.4-STABLE

zttest -v
Opened pseudo zap interface, measuring accuracy...

8192 samples in 8192 sample intervals 100.000000% 
8192 samples in 8192 sample intervals 100.000000% 
8192 samples in 8192 sample intervals 100.000000% 
8192 samples in 8192 sample intervals 100.000000% 
8192 samples in 8192 sample intervals 100.000000% 
8192 samples in 8192 sample intervals 100.000000% 
8192 samples in 8192 sample intervals 100.000000% 
8192 samples in 8192 sample intervals 100.000000% 
8192 samples in 8192 sample intervals 100.000000% 
8192 samples in 8192 sample intervals 100.000000% ^C
--- Results after 10 passes ---
Best: 100.000000 -- Worst: 100.000000 -- Average: 100.000000

hope this helps

-kim

--
w8hdkim at gmail.com