Index: apps/app_meetme.c
===================================================================
RCS file: /usr/cvsroot/asterisk/apps/app_meetme.c,v
retrieving revision 1.70
diff -u -r1.70 app_meetme.c
--- apps/app_meetme.c	14 Jan 2005 05:10:00 -0000	1.70
+++ apps/app_meetme.c	18 Jan 2005 03:10:43 -0000
@@ -19,6 +19,7 @@
 #include <asterisk/module.h>
 #include <asterisk/config.h>
 #include <asterisk/app.h>
+#include <asterisk/dsp.h>
 #include <asterisk/musiconhold.h>
 #include <asterisk/manager.h>
 #include <asterisk/options.h>
@@ -522,6 +523,8 @@
 	int menu_active = 0;
 	int using_pseudo = 0;
 	int duration=20;
+	int talking=0;
+	struct ast_dsp *dsp;
 
 	struct ast_app *app;
 	char *agifile;
@@ -774,6 +777,13 @@
 			x = 1;
 			ast_channel_setoption(chan,AST_OPTION_TONE_VERIFY,&x,sizeof(char),0);
 		}	
+		if ((res = ast_set_read_format(chan, AST_FORMAT_SLINEAR)))
+			ast_log(LOG_WARNING, "Unable to set read format to linear!\n");
+
+		if (!(dsp = ast_dsp_new())) {
+			ast_log(LOG_WARNING, "Unable to allocate DSP!\n");
+			res = -1;
+		}
 		for(;;) {
 			outfd = -1;
 			ms = -1;
@@ -852,7 +862,19 @@
 				f = ast_read(c);
 				if (!f) 
 					break;
-				if ((f->frametype == AST_FRAME_DTMF) && (confflags & CONFFLAG_EXIT_CONTEXT)) {
+				if ((f->frametype == AST_FRAME_VOICE) && (f->subclass == AST_FORMAT_SLINEAR)) {
+					int totalsilence;
+					int ms;
+					res = ast_dsp_silence(dsp, f, &totalsilence);
+					if (totalsilence < 300 && !talking) {
+						ast_log(LOG_WARNING, "MeetMe User %d Start Talking\n",user->user_no);
+						talking = 1;
+					}
+					if (totalsilence > 1000 && talking) {
+						ast_log(LOG_WARNING, "MeetMe User %d Stop Talking\n",user->user_no);
+						talking = 0;
+					}
+				} else if ((f->frametype == AST_FRAME_DTMF) && (confflags & CONFFLAG_EXIT_CONTEXT)) {
 					char tmp[2];
 					tmp[0] = f->subclass;
 					tmp[1] = '\0';