extern void isdnhdlc_rcv_init (struct isdnhdlc_vars *hdlc, int do_adapt56);
extern int isdnhdlc_decode (struct isdnhdlc_vars *hdlc, const unsigned char *src, int slen,int *count,
extern void isdnhdlc_rcv_init (struct isdnhdlc_vars *hdlc, int do_adapt56);
extern int isdnhdlc_decode (struct isdnhdlc_vars *hdlc, const unsigned char *src, int slen,int *count,