asterisk users - Mar 2005 - te110p sometimes green, sometimes stays red on stable cvs ?

Hi,

we've installed te110p with Suse 9.2 on Siemens primergy. We're
connecting
to voxsteam i60 to test PRI interface.

We have problems, after reboot sometimes it goes green, otherwise stays 
blinking red.

How could we debug this situation ?

Are there any common advices what to check ?

Are CVS Head drivers better than CVS stable ? Why ?

Do you also experience such unstable behaviour ?

Thanks in advance,

regards,

Rob.