[ADD] OnSIP doc

Closes #247

crm/leads/voip.rst

@@ -6,3 +6,4 @@ Odoo VOIP
    :titlesonly:
 
    voip/setup
+   voip/onsip

crm/leads/voip/onsip.rst

@@ -0,0 +1,78 @@
+===================
+OnSIP Configuration
+===================
+
+Introduction
+============
+
+Odoo VoIP can be set up to work together with OnSIP (www.onsip.com). In that case, the installation and setup of an Asterisk server is not necessary as the whole infrastructure is hosted and managed by OnSIP.
+
+You will need to open an account with OnSIP to use this service. Before doing so, make sure that your area and the areas you wish to call are covered by the service. After opening an OnSIP account, follow the configuration procedure below.
+
+Configuration
+=============
+
+Go to Apps and install the module **VoIP OnSIP**.
+
+.. image:: media/onsip01.png
+  :align: center
+
+Go to Settings/General Settings. In the section Integrations/Asterisk (VoIP), fill in the 3 fields:
+
+- **OnSIP Domain** is the domain you chose when creating an account on www.onsip.com. If you don't know it, log in to https://admin.onsip.com/ and you will see it in the top right corner of the screen.
+- **WebSocket** should contain wss://edge.sip.onsip.com
+- **Mode** should be Production
+
+.. image:: media/onsip02.png
+  :align: center
+
+Go to **Settings/Users**. In the form view of each VoIP user, in the Preferences tab, fill in the section **PBX Configuration**:
+
+- **SIP Login / Browser's Extension**: the OnSIP 'Username'
+- **OnSIP authorization User**: the OnSIP 'Auth Username'
+- **SIP Password**: the OnSIP 'SIP Password'
+- **Handset Extension**: the OnSIP 'Extension'
+
+You can find all this information by logging in at https://admin.onsip.com/users, then select the user you want to configure and refer to the fields as pictured below.
+
+.. image:: media/onsip03.png
+  :align: center
+
+You can now make phone calls by clicking the phone icon in the top right corner of Odoo (make sure you are logged in as a user properly configured in Odoo and in OnSIP).
+
+.. note::
+
+        If you see a *Missing Parameters* message in the Odoo softphone, make sure to refresh your Odoo window and try again.
+
+        .. image:: media/onsip04.png
+          :align: center
+
+.. note::
+
+        If you see an *Incorrect Number* message in the Odoo softphone, make sure to use the international format, leading with the plus (+) sign followed by the international country code. E.g.: +16506913277 (where +1 is the international prefix for the United States).
+
+        .. image:: media/onsip05.png
+          :align: center
+
+You can now also receive phone calls. Your number is the one provided by OnSIP. Odoo will ring and display a notification.
+
+.. image:: media/onsip06.png
+  :align: center
+
+OnSIP on Your Cell Phone
+========================
+
+In order to make and receive phone calls when you are not in front of your computer, you can use a softphone app on your cell phone in parallel of Odoo VoIP. This is useful for on-the-go calls, but also to make sure to hear incoming calls, or simply for convenience. Any SIP softphone will work.
+
+On Android, OnSIP has been successfully tested with `Zoiper <https://play.google.com/store/apps/details?id=com.zoiper.android.app>`_. You will have to configure it as follows:
+
+- **Account name**: OnSIP
+- **Host**: the OnSIP 'Domain'
+- **Username**: the OnSIP 'Username'
+- **Password**: the OnSIP 'SIP Password'
+- **Authentication user**: the OnSIP 'Auth Username'
+- **Outbound proxy**: sip.onsip.com
+
+.. warning::
+
+        The downside of using a softphone on your cell phone is that your calls will not be logged in Odoo as the softphone acts as an independent separate app.