Direct Push is

Microsoft Microsoft Corporation is an American multinational corporation and technology company, technology conglomerate headquartered in Redmond, Washington. Founded in 1975, the company became influential in the History of personal computers#The ear ...

's technology for receiving e-mail instantly on

Windows Mobile Windows Mobile is a discontinued mobile operating system developed by Microsoft for smartphones and personal digital assistants (PDA). Designed to be the portable equivalent of the Windows desktop OS in the emerging Mobile device, mobile/port ...

5.0, 6.0 and 6.1 enabled devices, from

Microsoft Exchange Server Microsoft Exchange Server is a mail server and calendaring server developed by Microsoft. It runs exclusively on Windows Server operating systems. The first version was called Exchange Server 4.0, to position it as the successor to the relat ...

s, Kerio Connect and Zarafa. This service was launched primarily for business users and was supported around 2006 by about 100 operators. It provides response times similar to the

push technology Push technology, also known as server Push, refers to a communication method, where the communication is initiated by a server rather than a client. This approach is different from the " pull" method where the communication is initiated by a clien ...

of RIM's

BlackBerry BlackBerry is a discontinued brand of handheld devices and related mobile services, originally developed and maintained by the Canadian company Research In Motion (RIM, later known as BlackBerry Limited) until 2016. The first BlackBerry device ...

service, but needs no special server upgrades other than having Exchange Server 2003 Service Pack 2. It works by initiating an HTTPS connection to the server through any connectivity that can carry an IP traffic such as GPRS or

EDGE Edge or EDGE may refer to: Technology Computing * Edge computing, a network load-balancing system * Edge device, an entry point to a computer network * Adobe Edge, a graphical development application * Microsoft Edge, a web browser developed by ...

technologies, through the firewall, then a front-end server that connects to the Exchange server that hosts the user mailbox. It also eliminates the need for devices to have a dedicated

IP address An Internet Protocol address (IP address) is a numerical label such as that is assigned to a device connected to a computer network that uses the Internet Protocol for communication. IP addresses serve two main functions: network interface i ...

, but requires "Always on"

GPRS General Packet Radio Service (GPRS), also called 2.5G, is a mobile data standard on the 2G cellular communication network's Global System for Mobile Communications, global system for mobile communications (GSM). Networks and mobile devices wit ...

or 3G connection. The Direct Push technology served as a feature for the Exchange Server ActiveSync service, which allowed Windows Mobile 5.0 and later versions of Windows Mobile software to keep their data up-to-date.

References

External links

Microsoft
s main site for this technology.
Understanding Direct Push

Kerio Connect wireless mobile synchronization
Push technology Windows Mobile {{wireless-stub