asterisk users - Jan 2005 - probably error in chan_capi

Hi,

Today I've installed chan_capi on newest asterisk 1.05.
I have HFC cards everything is geat (but echo cancelling method is too 
simple). But I see something very wrong. I want to attach 2 outgoing msn to 
both B channels.

so in capi.conf  I've added:

msn=19900,19901

After asterisk claims that I don't have any device with msn = 19901.
And I cannot call out with such msn.

To be honest I don't know what to do next.

Thaks for any help,

Regards,

Corvin