diff --git a/channels/chan_misdn_config.c b/channels/chan_misdn_config.c
index 05f3eabc9938d4cdf49245d0ae7059ba32bc4604..7feecbe387180db0076ebdb8f882a5c2e9e02ead 100644
--- a/channels/chan_misdn_config.c
+++ b/channels/chan_misdn_config.c
@@ -107,8 +107,8 @@ static const struct misdn_cfg_spec port_spec[] = {
 	{ "echocancelwhenbridged", MISDN_CFG_ECHOCANCELWHENBRIDGED, MISDN_CTYPE_BOOL, "no", NONE },
 	{ "echotraining", MISDN_CFG_ECHOTRAINING, MISDN_CTYPE_BOOLINT, "1", 1 },
 	{ "need_more_infos", MISDN_CFG_NEED_MORE_INFOS, MISDN_CTYPE_BOOL, "0", NONE },
-	{ "jitterbuffer", MISDN_CFG_JITTERBUFFER, MISDN_CTYPE_INT, "0", NONE },
-	{ "jitterbuffer_upper_threshold", MISDN_CFG_JITTERBUFFER_UPPER_THRESHOLD, MISDN_CTYPE_INT, "0", NONE },
+	{ "jitterbuffer", MISDN_CFG_JITTERBUFFER, MISDN_CTYPE_INT, "1000", NONE },
+	{ "jitterbuffer_upper_threshold", MISDN_CFG_JITTERBUFFER_UPPER_THRESHOLD, MISDN_CTYPE_INT, "600", NONE },
 	{ "callgroup", MISDN_CFG_CALLGROUP, MISDN_CTYPE_ASTGROUP, NO_DEFAULT, NONE },
 	{ "pickupgroup", MISDN_CFG_PICKUPGROUP, MISDN_CTYPE_ASTGROUP, NO_DEFAULT, NONE },
 	{ "msns", MISDN_CFG_MSNS, MISDN_CTYPE_MSNLIST, NO_DEFAULT, NONE }
diff --git a/configs/misdn.conf.sample b/configs/misdn.conf.sample
index b3f82b645a56ba66a53929f2957c2ac1a5b314ba..0dba62195bfe426102fdf00714887b9ef2b3bba8 100644
--- a/configs/misdn.conf.sample
+++ b/configs/misdn.conf.sample
@@ -258,7 +258,7 @@ jitterbuffer=1000
 ;
 ; change this threshold to enable dejitter functionality
 ;
-jitterbuffer_upper_threshold=0
+jitterbuffer_upper_threshold=600
 
 
 [intern]