In my menuconfig I put an * for : <*> Modular ISDN driver ---> <*>Digital Audio Processing of

transparent data

                                      <*>ISDN over IP tunnel
                                        <*>Support for HFC PCI

cards

                                      <*>Support for HFC

multiport cards (HFC-4S/8S/E1)

try compile as module then load after boot

modprobe mISDN_core modprobe hfcmulti dslot=1

Is there something more to do for mISDN? I saw on mISDN.org that

mISDNv2 is already in the kernel >= 2.6.27 so I were thinking it should work directly.

no it doesn't! it works for ISDN, but not for openbsc. openbsc requires differen SAPI values and multiple layer 2 processes on the d-channel. it will work with the latest mISDN from git repository:

git clone git://git.misdn.org/git/mISDN.git cd mISDN sh checkout-branch.sh socket <- change to socket branch (mISDNv2) make force <- delete all mISDN includes from kernel. make make install

be sure to disable mISDN support from kernel. the modules from git will be installed under /lib/modules/xxxx/extra. the "extra" modules have lower priority than the kernel modules, so disable mISDN in kernel config and reinstall modules (make modules && make modules_install). unused modules will then be removed. then install the git modules as described above.