asterisk users - Jun 2007 - zaphfc problem

Hello everybody.

I have a problem with my Billion ISDN card.

When I run Asterisk (asterisk -vvvc) on five minutes (aprox.) it puts in the
screen this:

zaphfc: empty HDLC frame or bad CRC received (framelen = 3, stat = 0xff,
card = 0).

in the framelen it change 3 and 2.

Anyone knows something about it?

Thanks a lot.

bye!
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