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diff --git a/tonezone.h b/tonezone.h
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+/*
+ * BSD Telephony Of Mexico "Tormenta" Tone Zone Support 2/22/01
+ * 
+ * Working with the "Tormenta ISA" Card 
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, 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 Lesser 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. 
+ *
+ * Primary Author: Mark Spencer <markster@linux-support.net>
+ *
+ */
+
+#ifndef _TONEZONE_H
+#define _TONEZONE_H
+#ifdef BUILDING_TONEZONE
+#include "zaptel.h"
+#else
+#include <linux/zaptel.h>
+#endif
+
+struct tone_zone_sound {
+	int toneid;
+	char data[256];				/* Actual zone description */
+	/* Description is a series of tones of the format:
+	   [!]freq1[+freq2][/time] separated by commas.  There
+	   are no spaces.  The sequence is repeated back to the 
+	   first tone description not preceeded by !.  time is
+	   specified in milliseconds */
+};
+
+struct tone_zone {
+	int zone;					/* Zone number */
+	char country[10];			/* Country code */
+	char description[40];		/* Description */
+	int ringcadence[ZT_MAX_CADENCE];	/* Ring cadence */
+	struct tone_zone_sound tones[ZT_TONE_MAX];
+};
+
+extern struct tone_zone builtin_zones[];
+
+/* Register a given two-letter tone zone if we can */
+extern int tone_zone_register(int fd, char *country);
+
+/* Register a given two-letter tone zone if we can */
+extern int tone_zone_register_zone(int fd, struct tone_zone *z);
+
+/* Retrieve a raw tone zone structure */
+extern struct tone_zone *tone_zone_find(char *country);
+
+/* Retrieve a raw tone zone structure by id instead of country*/
+extern struct tone_zone *tone_zone_find_by_num(int id);
+
+/* Retrieve a string name for a given tone id */
+extern char *tone_zone_tone_name(int id);
+
+/* Set a given file descriptor into a given country -- USE THIS
+   INTERFACE INSTEAD OF THE IOCTL ITSELF.  Auto-loads tone
+   zone if necessary */
+extern int tone_zone_set_zone(int fd, char *country);
+
+/* Get the current tone zone */
+extern int tone_zone_get_zone(int fd);
+
+/* Play a given tone, loading tone zone automatically
+   if necessary */
+extern int tone_zone_play_tone(int fd, int toneid);
+
+#endif