hi,
 
to connect multiple BS11 to one single E1 interface via cascade, a special patch was required. now it is part of the mISDN GIT. (socket branch)
 
use these module options:
 
modprobe hfcmulti dmask=0x00000042 bmask=0x0000003c,0x00000780 debug=0x40000
 
the dmask will give a dchannel mask for the first E1 interface. multiple masks can be given for multiple E1 interfaces.
the dmask will have bit set for each dchanne. in the example we have two bits set: slot 1 and slot 6.
the bmask will give a bchannel mask for each given dchannel bit:
 
for dchannel on slot 1 we use slot 2,3,4,5 for bchannel
for dchannel on slot 6 we use slot 7,8,9,10 for bchannel
 
the debug option displays initialization of E1 card on dmesg.
 
misdn_info:
 
  Port  1 'hfc-e1.2-1':      TE/NT-mode PRI E1  (for phone lines & E1 devices)
                             4 B-channels: 2-5
  --------
  Port  2 'hfc-e1.2-2':      TE/NT-mode PRI E1  (for phone lines & E1 devices)
                             4 B-channels: 7-10
regards,
 
andreas