diff --git a/conf/sip_profiles/internal-ipv6.xml b/conf/sip_profiles/internal-ipv6.xml
index 1e9019a720..37ff58b310 100644
--- a/conf/sip_profiles/internal-ipv6.xml
+++ b/conf/sip_profiles/internal-ipv6.xml
@@ -35,7 +35,7 @@
     <!--max number of open dialogs in proceeding -->
     <!--<param name="max-proceeding" value="1000"/>-->
     <!--session timers for all call to expire after the specified seconds -->
-    <!--<param name="session-timeout" value="120"/>-->
+    <!--<param name="session-timeout" value="1800"/>-->
     <!--<param name="multiple-registrations" value="true"/>-->
     <!--set to 'greedy' if you want your codec list to take precedence -->
     <param name="inbound-codec-negotiation" value="generous"/>
diff --git a/conf/sip_profiles/internal.xml b/conf/sip_profiles/internal.xml
index 45058c247f..dd1595d5ba 100644
--- a/conf/sip_profiles/internal.xml
+++ b/conf/sip_profiles/internal.xml
@@ -118,7 +118,7 @@
     <!--max number of open dialogs in proceeding -->
     <!--<param name="max-proceeding" value="1000"/>-->
     <!--session timers for all call to expire after the specified seconds -->
-    <!--<param name="session-timeout" value="120"/>-->
+    <!--<param name="session-timeout" value="1800"/>-->
     <!-- Can be 'true' or 'contact' -->
     <!--<param name="multiple-registrations" value="contact"/>-->
     <!--set to 'greedy' if you want your codec list to take precedence -->
diff --git a/src/mod/endpoints/mod_sofia/mod_sofia.h b/src/mod/endpoints/mod_sofia/mod_sofia.h
index d16b9e2c7b..be50dba83f 100644
--- a/src/mod/endpoints/mod_sofia/mod_sofia.h
+++ b/src/mod/endpoints/mod_sofia/mod_sofia.h
@@ -45,7 +45,7 @@
 #define HAVE_APR
 #include <switch.h>
 #include <switch_version.h>
-#define SOFIA_NAT_SESSION_TIMEOUT 20
+#define SOFIA_NAT_SESSION_TIMEOUT 1800
 #define SOFIA_MAX_ACL 100
 #ifdef _MSC_VER
 #define HAVE_FUNCTION 1