Sony Ericsson G900 Whitepaper - Page 21

White paper G900 email from the PC is transferred in to the corresponding 'synchronized email account' Inbox on G900. Messages and replies written using this account on G900 are transferred and sent via the PC. Email folders Messaging accounts have the following folders: Inbox, Outbox, SIM, Draft and Sent. Additional folders can be created, see below. Web-based email messages can, of course, be accessed using the G900 browser. To improve the organization of folders more folders can be created locally on G900. Local folders are only visible in the Messaging application. Push email Push email is a method of 'pushing' or forwarding email to mobile devices as soon as a message reaches the email server. These solutions may also include calendar and contacts synchronization. Push email solutions allow email messages to be delivered in the background in the same way as SMS or MMS messages. G900 is prepared for these solutions with Exchange ActiveSync™ preinstalled. A rich set of other third party applications are available. Note: Push email applications are generally quite power-consuming. Phone performance may be improved by changing from 3G to 2G. Push methods The various solutions use different methods to push messages, usually IP push, by listening to dedicated ports when a session is active. This is similar to instant messaging solutions. Some solutions may also use SMS messages with triggers to the application to start a synchronization or download, sometimes referred to as pseudopush. Exchange ActiveSync™ The push email application Exchange ActiveSync™ is normally pre-installed in the phone and ready for setup. With Exchange ActiveSync™ corporate email, calendar items and contacts on a Microsoft™ Exchange Server 2003 or 2007 can be wirelessly synchronized with the corresponding information in the phone. When on the move, the user can easily, for example, look up details in the company global address book or accept a request for a meeting. All changes in the phone are automatically synchronized with the user's Exchange Server data. Similarly, all changes to the Exchange Server data are transferred to the phone. With the Direct Push feature activated, synchronization is immediate. If the user, for example, receives a new email in Outlook™ (or a similar client) it is instantly copied to the phone. Security All solutions use end-to-end security using SSL, 3DES or AES encryption. Most solutions are based on the use of a fixed password for push email. Initially key exchange is also done by using device parameters such as the IMEI number. A few solutions combine push with one-time passwords that are limited for a certain amount of time before being re-entered. Many solutions have functionality for enforcing screen passwords. There is also sometimes theft and loss protection through wipeout commands and lock-out. 21 September 2008