diff --git a/conf/insideout/directory/default/brian.xml b/conf/insideout/directory/default/brian.xml
index 4bd562686f..43f349f144 100644
--- a/conf/insideout/directory/default/brian.xml
+++ b/conf/insideout/directory/default/brian.xml
@@ -34,7 +34,7 @@
       <!--Use the callerid of an inbound call in the from field on outbound calls via this gateway -->
       <!--<param name="caller-id-in-from" value="false"/>-->
       <!--extra sip params to send in the contact-->
-      <!--<param name="contact-params" value="tport=tcp"/>-->
+      <!--<param name="contact-params" value=""/>-->
       <!--send an options ping every x seconds, failure will unregister and/or mark it down-->
       <!--<param name="ping" value="25"/>-->
       <!--</gateway>-->
diff --git a/conf/insideout/sip_profiles/external/example.xml b/conf/insideout/sip_profiles/external/example.xml
index c6b79e8fe3..64081fdcd8 100644
--- a/conf/insideout/sip_profiles/external/example.xml
+++ b/conf/insideout/sip_profiles/external/example.xml
@@ -27,7 +27,7 @@
   <!--Use the callerid of an inbound call in the from field on outbound calls via this gateway -->
   <!--<param name="caller-id-in-from" value="false"/>-->
   <!--extra sip params to send in the contact-->
-  <!--<param name="contact-params" value="tport=tcp"/>-->
+  <!--<param name="contact-params" value=""/>-->
   <!--send an options ping every x seconds, failure will unregister and/or mark it down-->
   <!--<param name="ping" value="25"/>-->
   <!--</gateway>-->
diff --git a/conf/insideout/sip_profiles/internal/example.xml b/conf/insideout/sip_profiles/internal/example.xml
index c6b79e8fe3..64081fdcd8 100644
--- a/conf/insideout/sip_profiles/internal/example.xml
+++ b/conf/insideout/sip_profiles/internal/example.xml
@@ -27,7 +27,7 @@
   <!--Use the callerid of an inbound call in the from field on outbound calls via this gateway -->
   <!--<param name="caller-id-in-from" value="false"/>-->
   <!--extra sip params to send in the contact-->
-  <!--<param name="contact-params" value="tport=tcp"/>-->
+  <!--<param name="contact-params" value=""/>-->
   <!--send an options ping every x seconds, failure will unregister and/or mark it down-->
   <!--<param name="ping" value="25"/>-->
   <!--</gateway>-->
diff --git a/conf/rayo/sip_profiles/external/example.xml b/conf/rayo/sip_profiles/external/example.xml
index 2a4df31aaf..0497bcd1e1 100644
--- a/conf/rayo/sip_profiles/external/example.xml
+++ b/conf/rayo/sip_profiles/external/example.xml
@@ -27,7 +27,7 @@
   <!--Use the callerid of an inbound call in the from field on outbound calls via this gateway -->
   <!--<param name="caller-id-in-from" value="false"/>-->
   <!--extra sip params to send in the contact-->
-  <!--<param name="contact-params" value="tport=tcp"/>-->
+  <!--<param name="contact-params" value=""/>-->
   <!--send an options ping every x seconds, failure will unregister and/or mark it down-->
   <!--<param name="ping" value="25"/>-->
   <!--</gateway>-->
diff --git a/conf/sbc/sbc_profiles/external/example.xml b/conf/sbc/sbc_profiles/external/example.xml
index c6b79e8fe3..64081fdcd8 100644
--- a/conf/sbc/sbc_profiles/external/example.xml
+++ b/conf/sbc/sbc_profiles/external/example.xml
@@ -27,7 +27,7 @@
   <!--Use the callerid of an inbound call in the from field on outbound calls via this gateway -->
   <!--<param name="caller-id-in-from" value="false"/>-->
   <!--extra sip params to send in the contact-->
-  <!--<param name="contact-params" value="tport=tcp"/>-->
+  <!--<param name="contact-params" value=""/>-->
   <!--send an options ping every x seconds, failure will unregister and/or mark it down-->
   <!--<param name="ping" value="25"/>-->
   <!--</gateway>-->
diff --git a/conf/sbc/sbc_profiles/internal/example.xml b/conf/sbc/sbc_profiles/internal/example.xml
index c6b79e8fe3..64081fdcd8 100644
--- a/conf/sbc/sbc_profiles/internal/example.xml
+++ b/conf/sbc/sbc_profiles/internal/example.xml
@@ -27,7 +27,7 @@
   <!--Use the callerid of an inbound call in the from field on outbound calls via this gateway -->
   <!--<param name="caller-id-in-from" value="false"/>-->
   <!--extra sip params to send in the contact-->
-  <!--<param name="contact-params" value="tport=tcp"/>-->
+  <!--<param name="contact-params" value=""/>-->
   <!--send an options ping every x seconds, failure will unregister and/or mark it down-->
   <!--<param name="ping" value="25"/>-->
   <!--</gateway>-->
diff --git a/conf/softphone/accounts/example.xml b/conf/softphone/accounts/example.xml
index 7ac8db1186..249b460709 100644
--- a/conf/softphone/accounts/example.xml
+++ b/conf/softphone/accounts/example.xml
@@ -27,7 +27,7 @@
   <!--Use the callerid of an inbound call in the from field on outbound calls via this gateway -->
   <!--<param name="caller-id-in-from" value="false"/>-->
   <!--extra sip params to send in the contact-->
-  <!--<param name="contact-params" value="tport=tcp"/>-->
+  <!--<param name="contact-params" value=""/>-->
   <!--send an options ping every x seconds, failure will unregister and/or mark it down-->
   <!--<param name="ping" value="25"/>-->
   <!--</gateway>-->
diff --git a/conf/vanilla/directory/default/brian.xml b/conf/vanilla/directory/default/brian.xml
index 5ea3f58ea6..98f720f47e 100644
--- a/conf/vanilla/directory/default/brian.xml
+++ b/conf/vanilla/directory/default/brian.xml
@@ -36,7 +36,7 @@
       <!--Use the callerid of an inbound call in the from field on outbound calls via this gateway -->
       <!--<param name="caller-id-in-from" value="false"/>-->
       <!--extra sip params to send in the contact-->
-      <!--<param name="contact-params" value="tport=tcp"/>-->
+      <!--<param name="contact-params" value=""/>-->
       <!--send an options ping every x seconds, failure will unregister and/or mark it down-->
       <!--<param name="ping" value="25"/>-->
       <!--</gateway>-->
diff --git a/conf/vanilla/sip_profiles/external/example.xml b/conf/vanilla/sip_profiles/external/example.xml
index 2a4df31aaf..0497bcd1e1 100644
--- a/conf/vanilla/sip_profiles/external/example.xml
+++ b/conf/vanilla/sip_profiles/external/example.xml
@@ -27,7 +27,7 @@
   <!--Use the callerid of an inbound call in the from field on outbound calls via this gateway -->
   <!--<param name="caller-id-in-from" value="false"/>-->
   <!--extra sip params to send in the contact-->
-  <!--<param name="contact-params" value="tport=tcp"/>-->
+  <!--<param name="contact-params" value=""/>-->
   <!--send an options ping every x seconds, failure will unregister and/or mark it down-->
   <!--<param name="ping" value="25"/>-->
   <!--</gateway>-->
diff --git a/conf/vanilla/sip_profiles/internal/example.xml b/conf/vanilla/sip_profiles/internal/example.xml
index 10263b05a5..a5cbd7d2b7 100644
--- a/conf/vanilla/sip_profiles/internal/example.xml
+++ b/conf/vanilla/sip_profiles/internal/example.xml
@@ -27,7 +27,7 @@
   <!--Use the callerid of an inbound call in the from field on outbound calls via this gateway -->
   <!--<param name="caller-id-in-from" value="false"/>-->
   <!--extra sip params to send in the contact-->
-  <!--<param name="contact-params" value="tport=tcp"/>-->
+  <!--<param name="contact-params" value=""/>-->
   <!-- Put the extension in the contact -->
   <!--<param name="extension-in-contact" value="true"/>-->
   <!--send an options ping every x seconds, failure will unregister and/or mark it down-->
diff --git a/src/mod/endpoints/mod_sofia/conf/sofia.conf.xml b/src/mod/endpoints/mod_sofia/conf/sofia.conf.xml
index f624fa5a74..52fb8faefb 100644
--- a/src/mod/endpoints/mod_sofia/conf/sofia.conf.xml
+++ b/src/mod/endpoints/mod_sofia/conf/sofia.conf.xml
@@ -43,7 +43,7 @@
                calls via this gateway -->
           <param name="caller-id-in-from" value="false"/>
           <!-- extra sip params to send in the contact -->
-          <param name="contact-params" value="tport=tcp"/>
+          <param name="contact-params" value=""/>
           <!-- put the extension in the contact -->
           <param name="extension-in-contact" value="true"/>
           <!-- send an options ping every x seconds, failure will unregister