In the following paragraphs some advanced telephony features are described. These features are available in PrivateGSM Enterprise Edition with PrivateServer while using end-to-site encryption security model.

Transfer secure call

During a secure call you can transfer the call to another contact.

• iPhone: tap in the middle of screen > tap on Transfer icon
• Android:  press menu key > select Transfer Call
• Blackberry: press menu key > select Transfer Call

You can transfer the call to a contact in your address-book or you can input a number to transfer the call to.

Three way secure call

During a secure call you can add a third participant to the call.

• iPhone: tap in the middle of screen > tap on Add icon
• Android: press menu key > select Add Participant menu item
• Blackberry: press menu key > select Add Participant menu item

You can add a new participant to the current secure call by choosing a contact from your address book or inserting a number manually.

Secure Conference Room

Conference room is a feature provided by the PrivateServer secure PBX. You should dial the conference room phone number and, if a PIN is required during the call:

• iPhone: tap in the middle of screen > tap on DTMF icon and digit the PIN number
• Android: press menu key > select Send DTMF menu item and digit the PIN number
• Blackberry: press menu key > select Send DTMF menu item and digit the PIN number