Update README.adoc

roles/pbx/README.adoc

@@ -156,6 +156,22 @@ image::files/linphone_setup.jpg[width='33%']
 image::files/linphone_connected.jpg[width='33%']
 
 * _If you've created more than one extension, make a call to another extension!_  If you've not yet made more than one extension, try calling an arbitrary extension, or try calling your own extension (your own phone number).
++
+Due to Linphone's inability for phones to ring when the screen is locked ,you can alternatively use a softphone (SIP) app on your smartphone or laptop called Wave Lite.  In this example we will use the  [https://wiki.zenitel.com/wiki/Grandstream_Wave_Lite_mobile_appapp], on an Android phone.  After you open the app, follow these steps:
+
+* Connect your smartphone or laptop to the *Internet in a Box* WiFi hotspot
+* Go to Account Settings *
+* Add new account *
+* Select *SIP ACCOUNT*
+
+** *Account name* is your name,eg John Doe*
+** *Sip Server* is your IIAB server's IP address
+** *SIP User ID* is your extension number eg 301
+** *SIP Authentification ID* is your extension number eg 301
+** *Password* is the same as above *Secret*
+** *Confirm by clicking tick synbol ✓ on top right*
+
+* If the connection is successful, you will see a green circle next to your name [John Doe].
 
 ** You should see activity in the *FreePBX Statistics* applet at http://box/freebx (or http://box:83/freebx) > *Dashboard*
 ** Connection details may also be seen in the Asterisk logs at: `/var/logs/asterisk/full`