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Calling by Contacts list

Select Contacts tab from the tab bar, tap on the contact you want to call and select the contact number associated with PrivateGSM.

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Excerpt IncludeMaking a secure call with PrivateGSMnopaneltrueMaking a secure call with PrivateGSMTo make a secure call, you and the called party must have PrivateGSM software running on the mobile device, be connected to the Internet and to the same SIP server.

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As you can see in 

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 each contact can show a coloured ball at its left, or nothing at all. These are status marker and they represent the Presence Status for each contact.

Presence

The Presence avoid users to call contacts who are not reachable, eg: because they do not have PrivateGSM activated and/or connected. The main value of this feature is to improve user experience suggesting the possible outcome of a call.

Contacts lists

Starting with the present version, there are three lists:

• BASE: it lists all the contacts which are in the mobile address book, ordering them in the very same way.
• KNOWN: it shows only known contacts (registered or not) according to PrivateServer's knowledge. This means it is a list of the contacts that are recognised by the server and thus can have a status.
• FAVOURITES: it reads the contacts marked by you as "PrivateGSM favorites". It's a selection of contacts you choose to have apart, in order to make speed calls.

Each list may show a Contact status beside each contact. The contact status legenda is shown below:

Contact status

Image Added	Online	The contact is reachable. You can make a secure call to the user.
Image Added	Offline	The contact is not reachable, because is not under network coverage or is offline. You can try to make a secure call but the call will likely fail
Image Added	Warning	The contact is not reachable using a full secure call, but you can call him using the unsecure Sip Trunk configured on your server.
Image Added	Error	There is a comunication error between your phone and the server. The contact status is unknown, anyway you can try to make a secure call

 

Calling by dialpad

You can make a secure call to any arbitrary number (presuming that the call peer has PrivateGSM connected) by selecting the “DialPad” tab and  from PrivateGSM menu by simply entering the number with the on-screen keypad and pressing the dial (green) button. 

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Receiving a secure call with PrivateGSM

Once PrivateGSM is installed and all the settings are correctly configured on your device , you are able to receive a secure call.  PrivateGSM displays When a screen when an incoming secure call is arrives to your phone. Press the Accept button to allow the connection. After device a notification bar will be shown on the top of the screen. Tap on the notification to bring the application in foreground, then answer or decline the call from the application. After the system have exchanged and verified the security keys the you can start the conversation.

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Call status

To establish a call PrivateGSM completes three phases shown by three icons:

Call status icons

Checking your security

A PrivateGSM call is always encrypted. The call is automatically secured during the call setup. As soon as the call is established you can immediately start to talk securely with your call peer.

History

Every event performed or received on your PrivateGSM is listed into the "History" tab, which can be displayed by pressing "Recent" icon on the tab bar.

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Each event has a detail icon (the clock that ends each event line shown in

By clicking on this icon you have access to event's details (cfr 

Secure Messages

You can communicate with your peers by text messages using the Secure Messages System which provides Secure Messages. A Secure Message is a text message that travels into the same encrypted architecture of the Secure Call. 

Secure Messages rely on the very same security infrastructure the voice calls do. Plus for security each Secure Message is blanked 15 minutes after it's been read or sent.

Sending Secure Messages from "History" tab

Secure Messages are available via "History" tab, going into the detailed view: 

Using interface shown in  you can type text messages and send them to your party by pressing the "Send" button (the one on the right side of the text box in 

Sending Secure Messages from "Contacts list" tab

Secure Messages are also available from "Contacts list" tab. 

You have to select an account from the list shown in 

 Then you get a view like in 

Secure Messages status icons and known limitations

Each Secure Message is displayed with an icon showing its status. Most important icons are:

Icon	Meaning
Image Added	Sending Message
Image Added	Message Delivered
Image Added	Error sending Message

There are few known limitations in the current Secure Message System: