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    /*
    
     * Asterisk -- An open source telephony toolkit.
    
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     *
    
     * Copyright (C) 1999 - 2005, Digium, Inc.
     *
     * Mark Spencer <markster@digium.com>
    
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     *
    
     * See http://www.asterisk.org for more information about
     * the Asterisk project. Please do not directly contact
     * any of the maintainers of this project for assistance;
     * the project provides a web site, mailing lists and IRC
     * channels for your use.
    
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     *
     * This program is free software, distributed under the terms of
    
     * the GNU General Public License Version 2. See the LICENSE file
     * at the top of the source tree.
     */
    
    
     * \brief App to send DTMF digits
    
     *
     * \author Mark Spencer <markster@digium.com>
    
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     * \ingroup applications
    
    #include "asterisk.h"
    
    ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
    
    
    #include "asterisk/pbx.h"
    #include "asterisk/module.h"
    #include "asterisk/app.h"
    
    #include "asterisk/manager.h"
    
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    static char *app = "SendDTMF";
    
    static char *synopsis = "Sends arbitrary DTMF digits";
    
    static char *descrip = 
    
    " SendDTMF(digits[,timeout_ms]): Sends DTMF digits on a channel. \n"
    
    " Accepted digits: 0-9, *#abcd, w (.5s pause)\n"
    
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    " The application will either pass the assigned digits or terminate if it\n"
    " encounters an error.\n";
    
    static int senddtmf_exec(struct ast_channel *chan, void *vdata)
    
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    {
    	int res = 0;
    
    	AST_DECLARE_APP_ARGS(args,
    		AST_APP_ARG(digits);
    		AST_APP_ARG(timeout);
    
    	if (ast_strlen_zero(vdata)) {
    
    		ast_log(LOG_WARNING, "SendDTMF requires an argument (digits or *#aAbBcCdD)\n");
    
    	data = ast_strdupa(vdata);
    	AST_STANDARD_APP_ARGS(args, data);
    
    	if (!ast_strlen_zero(args.timeout))
    		timeout = atoi(args.timeout);
    	if (!ast_strlen_zero(args.duration))
    		duration = atoi(args.duration);
    
    	res = ast_dtmf_stream(chan, NULL, args.digits, timeout <= 0 ? 250 : timeout, duration);
    
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    	return res;
    }
    
    
    static char mandescr_playdtmf[] =
    "Description: Plays a dtmf digit on the specified channel.\n"
    "Variables: (all are required)\n"
    "	Channel: Channel name to send digit to\n"
    "	Digit: The dtmf digit to play\n";
    
    
    static int manager_play_dtmf(struct mansession *s, const struct message *m)
    
    	const char *channel = astman_get_header(m, "Channel");
    	const char *digit = astman_get_header(m, "Digit");
    
    	struct ast_channel *chan = ast_get_channel_by_name_locked(channel);
    
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    	if (!chan) {
    		astman_send_error(s, m, "Channel not specified");
    
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    	if (!digit) {
    
    		astman_send_error(s, m, "No digit specified");
    
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    	astman_send_ack(s, m, "DTMF successfully queued");
    
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    static int unload_module(void)
    
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    {
    
    	res |= ast_manager_unregister("PlayDTMF");
    
    static int load_module(void)
    
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    {
    
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    	int res;
    
    	res = ast_manager_register2( "PlayDTMF", EVENT_FLAG_CALL, manager_play_dtmf, "Play DTMF signal on a specific channel.", mandescr_playdtmf );
    	res |= ast_register_application(app, senddtmf_exec, synopsis, descrip);
    
    	return res;
    
    AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Send DTMF digits Application");