BlackBerry Enterprise Server
BlackBerry smartphones can be integrated into an organization's e-mail system through a software package called BlackBerry Enterprise Server (BES). Versions of BES are available for Microsoft Exchange, Lotus Domino and Novell GroupWise. Google has made a Connector for BES which makes BES available for Google Apps as well. While individual users may be able to use a wireless provider's e-mail services without having to install BES themselves, organizations with multiple users usually run BES on their own network. Some third-party companies provide hosted BES solutions. Every BlackBerry has an ID called a BlackBerry PIN, which is used to identify the device to the BES. BlackBerry now provides a free BES software called BES Express (BESX).[23]
BES acts as an e-mail relay for corporate accounts so that users always have access to their e-mail. The software monitors the user's local Inbox, and when a new message comes in, it picks up the message and passes it to RIM's Network Operations Center (NOC). The messages are then relayed to the user's wireless provider, which in turn delivers them to the user's BlackBerry device.
This is called push e-mail, because all new e-mails, contacts, task entries, memopad entries, and calendar entries are pushed out to the BlackBerry device automatically and instantaneously (as opposed to the user synchronizing the data manually or having the device poll the server at intervals). BlackBerry also supports polling email, through third party applications. The messaging system built in to the BlackBerry only understands how to receive messages from a BES or the BIS, these services handle the connections to the user's mail providers. Device storage also enables the mobile user to access all data off-line in areas without wireless service. When the user reconnects to wireless service, the BES sends the latest data.
An included feature in the newer models of the BlackBerry is the ability for it to quickly track your current location through trilateration without the use of GPS, thus saving battery life and time. Trilateration can be used as a quick, less battery intensive way to provide location-aware applications with the co-ordinates of the user. However, the accuracy of BlackBerry trilateration is less than that of GPS due to a number of factors, including cell tower blockage by large buildings, mountains, or distance.
BES also provides handhelds with TCP/IP connectivity accessed through a component called MDS (Mobile Data System) Connection Service.[24] This allows for custom application development using data streams on BlackBerry devices based on the Sun Microsystems Java ME platform.
In addition, BES provides network security, in the form of Triple DES[25] or, more recently, AES[26] encryption[27][28] of all data (both e-mail and MDS traffic) that travels between the BlackBerry handheld and a BlackBerry Enterprise Server.
Most providers offer flat monthly pricing for unlimited data between BlackBerry units and BES. In addition to receiving e-mail, organizations can make intranets or custom internal applications with unmetered traffic.
With more recent versions of the BlackBerry platform, the MDS is no longer a requirement for wireless data access. Starting with OS 3.8 or 4.0, BlackBerry handhelds can access the Internet (i.e. TCP/IP access) without an MDS – formerly only e-mail and WAP access was possible without a BES/MDS. The BES/MDS is still required for secure e-mail, data access, and applications that require WAP from carriers that do not allow WAP access.
[edit]BlackBerry Internet Service
The primary alternative to using BlackBerry Enterprise Server is to use the BlackBerry Internet Service. BlackBerry Internet Service, or BIS is available in 91 countries internationally. BlackBerry Internet Service was developed primarily for the average consumer rather than for the business consumer. BlackBerry Internet Service allows POP3 and IMAP email integration for an individual personal user. BlackBerry Internet Service allows up to 10 email accounts to be accessed, including many popular email accounts such as Gmail, Hotmail, Yahoo and AOL. BlackBerry Internet Service also allows for the function of the push capabilities in various other BlackBerry Applications. Various applications developed by RIM for BlackBerry utilize the push capabilities of BIS, such as the Instant Messaging clients, Google Talk, Windows Live Messenger and Yahoo Messenger. Social Networks Facebook, Myspace and Twitter's notification system is accessed through BIS, allowing for push notifications for them.
