[Asterisk-Users] bri error

[Altus Snyman]

Good day all
This is a error that keeps on popping up in my /var/log/messages when I
get incoming or outgoing calls on my bri card connected to 4 telco isdn
units?It is a junghanns 4 port card with the latest version of the
drivers and latest asterisk
Apr 29 11:37:39 ccv kernel: qozap: BAD CRC for hdlc frame on card 1
(cardID 0) S/T port 1
Apr 29 11:37:39 ccv kernel: qozap: check the 100 Ohm termination for
this span!
Apr 29 11:45:25 ccv kernel: zaptel Disabled echo canceller because of
tone (rx) on channel 1

Please help and advice?