Displaying 2 results from an estimated 2 matches for "wct4xx".
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wct4xxp
2004 May 31
2
Crc4 issues
...s is our 2nd E1 client that we try to use crc4 either with the e100p
or with the e405p without luck.
After some trials, we ask the telco to switch off crc4 on their side and
everything works flawlessly.
Is there anything in the crc4 calculation that may be broken? We took a
look at wct1xxx.c and wct4xx.c but there doesn't seem to be much there
to be fixed (apparently the crc4 calculation is done within the chip
itself).
We also took a look at
http://lists.digium.com/pipermail/asterisk-cvs/2003-September/000126.htm
l but couldn't figure out what bits should we try to set to test other
car...
2006 Feb 05
11
TE411P Really Bad Echo
I just implemented a system using a TE411P hardware echo cancellation
card. Per Digium, I setup zaptel.conf, and zapata.conf the same way as
I always have. To my surprise calls out to the PSTN had a terrible
echo. 1 - 2 second delay, and quite clear. The echo was so bad that I
had to remove the hardware echo cancellation module from the card. We
are only using the 1st span of this card right