Index: zonedata.c
===================================================================
--- zonedata.c	(revision 1001)
+++ zonedata.c	(working copy)
@@ -560,5 +560,23 @@
 		{ ZT_TONE_STUTTER, "450+425" },
 	  },
 	},
+	{ 36, "th", "Thailand", { 1000, 4000 },
+          {
+		/* Reference: http://www.itu.int/ITU-T/inr/forms/files/tones-0203.pdf */
+		{ ZT_TONE_DIALTONE,   "400*50" },
+		{ ZT_TONE_BUSY,       "400/500,0/500" },
+		{ ZT_TONE_RINGTONE,   "400/1000,0/4000" },
+		{ ZT_TONE_CONGESTION, "400/300,0/300" },
+		{ ZT_TONE_CALLWAIT,   "1000/400,10000/400,1000/400" },
+		/* DIALRECALL - not specified - use special dial tone instead. */
+		{ ZT_TONE_DIALRECALL, "400*50/400,0/100,400*50/400,0/100" },
+		/* RECORDTONE - not specified */
+		{ ZT_TONE_RECORDTONE, "1400/500,0/15000" },
+		/* INFO - specified as an announcement - use tones instead. */
+		{ ZT_TONE_INFO,       "950/330,1400/330,1800/330" },
+		/* STUTTER - not specified */
+		{ ZT_TONE_STUTTER,    "!400/200,!0/200,!400/600,!0/200,!400/200,!0/200,!400/600,!0/200,!400/200,!0/200,!400/600,!0/200,!400/200,!0/200,!400/600,!0/200,400" },
+	  },
+	},
 	{ -1 }		
 };