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<DIV><FONT face=Arial size=2>I discussed my installation more with Tzafrir last
week. He concluded that he thinks I don't have an HFC card. I think
it is somewhat a matter of semantics. As far as I have been able to
determine, there are at least three general types of HFC cards. By far the
most common are cards based on the "Cologne" chip--which are well
supported. The second group are based on a "multichannel" chip, which
seems to be fairly popular now, particularly for 2 and 4 port BRI cards where a
single IC can form the basis of the card. The third group are based on the
Winbond W6692 chip. I think the chip was released about 10 years
ago. It has not been well supported. That is the chip my card
has. It appears that no form of Zaptel or Dahdi, including publicly
available patches, supports it.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I'm not sure, but I think mISDN supports it, and I
know my card is CAPI compliant, but that may assume a driver that may not exist
for Linux. Whether either of these supports US NT1 format remains a
question. Also, there is the issue of physical level signaling, which is
different in the US than in Europe. I don't know if my NT1 U to S/T
adapter takes care of that or not. I do know that there have been products
out there that could be used in either market with only a firmware change, so
maybe this is a non-issue.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>One of my TAs (I have several with differing
feature sets and in various states of repair and (non) support) will generate a
D channel transaction log, which would let me know what exchange is required
with the CO. That might be compared to what the channel software
does. I might be able to modify the source if necessary, although there
are two or three learning curves involved for me.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Wilton</FONT></DIV>
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