mISDN_dsp_element   22 include/linux/mISDNdsp.h extern int  mISDN_dsp_element_register(struct mISDN_dsp_element *elem);
mISDN_dsp_element   23 include/linux/mISDNdsp.h extern void mISDN_dsp_element_unregister(struct mISDN_dsp_element *elem);