[Asterisk-Users] HDLC Bad FCS / HDLC Abort solution

[Jens]

Hi

Related to this message:
http://lists.digium.com/pipermail/asterisk-users/2005-February/090205.html

After having a lot of trouble with abort and breakdown of the PRI connection I 
finally figured out what was wrong:

The kernel was compiled for generic ide chipsets which doesn't support DMA.
When our daily backup created some load for the disks the interrupts for the 
digium card weren't handled in time which lead to a breakdown of the 
connection.

Simply compile the related chipset for your board into the kernel and feel the 
power of DMA :-)
It's much cheaper than buying a new board as some people suggested.

Maybe other cards produce the same kind of traffic e.g. ISDN Cards. If you can 
my hint would be to remove as much cards as possible. 
So far enabling DMA for the HDs fixed the problems for me.

Enjoy Asterisk
Jens