diff --git a/README.md b/README.md
index 1e3c480..f2b3639 100644
--- a/README.md
+++ b/README.md
@@ -3,5 +3,13 @@
 ## Linphone configuration
 
 Choose a SIP UDP, Audio RTP/UDP and Video RTP/UDP that is different between your clients.
-Check behind NAT/Firewall.
-Set public IP as 127.13.3.7
+Go to manage account.
+Add a new SIP proxy.
+
+```
+Username: <username>@127.13.3.7:<SIP_PORT>
+Proxy: 127.13.3.7:<SIP_PORT>
+Leave the rest empty.
+Uncheck all the checkboxes.
+```
+