diff --git a/pcscf/kamailio_pcscf.cfg b/pcscf/kamailio_pcscf.cfg
index 6f82c1e..f96a006 100644
--- a/pcscf/kamailio_pcscf.cfg
+++ b/pcscf/kamailio_pcscf.cfg
@@ -99,7 +99,7 @@ enable_tls=yes
 #!ifdef WITH_TCP
 # life time of TCP connection when there is no traffic
 # - a bit higher than registration expires to cope with UA behind NAT
-tcp_connection_lifetime=3615
+tcp_connection_lifetime=36000
 # If a message received over a tcp connection has "alias" in its via a new tcp
 # alias port will be created for the connection the message came from (the
 # alias port will be set to the via one).
@@ -388,6 +388,8 @@ modparam("ims_registrar_pcscf", "is_registered_fallback2ip", 1)
 modparam("ims_registrar_pcscf", "ignore_reg_state", 1)
 modparam("ims_registrar_pcscf", "ignore_contact_rxport_check", 1)
 modparam("ims_registrar_pcscf", "pending_reg_expires", 30)
+modparam("ims_registrar_pcscf", "subscription_expires", 36000)
+modparam("ims_usrloc_pcscf", "expires_grace", 36000)
 
 #!ifdef WITH_REGINFO
 modparam("ims_registrar_pcscf", "subscribe_to_reginfo", 1)
@@ -908,7 +910,7 @@ event_route[uac:reply] {
 			$sht(natpingfail=>$uac_req(ouri)) = $sht(natpingfail=>$uac_req(ouri)) + 1;
 		}
 		xlog("  request sent to $uac_req(ruri): Fail Counter is $sht(natpingfail=>$uac_req(ouri))\n");
-		if ($sht(natpingfail=>$uac_req(ouri)) > 5) {
+		if ($sht(natpingfail=>$uac_req(ouri)) > 30) {
 			if ($(uac_req(ouri){uri.transport}) == "tcp") {
 				$var(alias) = "alias="+$(uac_req(ouri){uri.host})+"~"+$(uac_req(ouri){uri.port})+"~2";
 			} else if ($(uac_req(ouri){uri.transport}) == "tls") {