# isdn_tty.h

    /* $Id$

     * header for Linux ISDN subsystem, tty related functions (linklevel).
     *
     * Copyright 1994,95,96 by Fritz Elfert (fritz@wuemaus.franken.de)
     * Copyright 1995,96    by Thinking Objects Software GmbH Wuerzburg
     *
     * This program is free software; you can redistribute it and/or modify
     * it under the terms of the GNU General Public License as published by
     * the Free Software Foundation; either version 2, or (at your option)
     * any later version.
     *
     * This program is distributed in the hope that it will be useful,
     * but WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     * GNU General Public License for more details.
     *
     * You should have received a copy of the GNU General Public License
     * along with this program; if not, write to the Free Software
     * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
     *
     * $Log$
     * Revision 1.11  1998/03/19 13:18:27  keil
     * Start of a CAPI like interface for supplementary Service
     * first service: SUSPEND
     *
     * Revision 1.10  1997/03/02 14:29:26  fritz
     * More ttyI related cleanup.
     *
     * Revision 1.9  1997/02/28 02:32:49  fritz
     * Cleanup: Moved some tty related stuff from isdn_common.c
     *          to isdn_tty.c
     * Bugfix:  Bisync protocol did not behave like documented.
     *
     * Revision 1.8  1997/02/10 20:12:50  fritz
     * Changed interface for reporting incoming calls.
     *
     * Revision 1.7  1997/02/03 23:06:10  fritz
     * Reformatted according CodingStyle
     *
     * Revision 1.6  1997/01/14 01:35:19  fritz
     * Changed prototype of isdn_tty_modem_hup.
     *
     * Revision 1.5  1996/05/17 03:52:31  fritz
     * Changed DLE handling for audio receive.
     *
     * Revision 1.4  1996/05/11 21:52:34  fritz
     * Changed queue management to use sk_buffs.
     *
     * Revision 1.3  1996/05/07 09:16:34  fritz
     * Changed isdn_try_read parameter.
     *
     * Revision 1.2  1996/04/30 21:05:27  fritz
     * Test commit
     *
     * Revision 1.1  1996/01/10 21:39:22  fritz
     * Initial revision
     *
     */

    extern void isdn_tty_modem_escape(void);
    extern void isdn_tty_modem_ring(void);
    extern void isdn_tty_modem_xmit(void);
    extern int isdn_tty_modem_init(void);
    extern void isdn_tty_readmodem(void);
    extern int isdn_tty_find_icall(int, int, setup_parm);
    extern void isdn_tty_cleanup_xmit(modem_info *);
    extern int isdn_tty_stat_callback(int, isdn_ctrl *);
    extern int isdn_tty_rcv_skb(int, int, int, struct sk_buff *);
    extern int isdn_tty_capi_facility(capi_msg *cm);