send silence on smaller sleeps

src/switch_ivr.c

@@ -170,7 +170,7 @@ SWITCH_DECLARE(switch_status_t) switch_ivr_sleep(switch_core_session_t *session,
 		SWITCH_IVR_VERIFY_SILENCE_DIVISOR(sval);
 	}
 
-	if (ms > 100 && sval) {
+	if (ms > 10 && sval) {
 		switch_core_session_get_read_impl(session, &imp);
 
 		if (switch_core_codec_init(&codec,