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Wap Basics

WAP Homepages

WAP homepages are not very different from HTML homepages. The markup language used for WAP is WML (Wireless Markup Language). WML uses tags – just like HTML – but the syntax is stricter and conforms to the XML 1.0 standard.

WML pages have the extension *.WML, just like HTML pages have the extension *.HTML.

WML Tags

WML is mostly about text. Tags that would slow down the communication with handheld devices are not a part of the WML standard. The use of tables and images is strongly restricted.

Since WML is an XML application, all tags are case sensitive ( is not the same as ), and all tags must be properly closed.

WML Decks and Cards

WML pages are called DECKS. They are constructed as a set of CARDS, related to each other with links. When a WML page is accessed from a mobile phone, all the cards in the page are downloaded from the WAP server. Navigation between the cards is done by the phone computer – inside the phone – without any extra access trips to the server.

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What is Wap?

The wireless industry came up with the idea of WAP. The point of this standard was to show internet contents on wireless clients, like mobile phones.

• WAP stands for Wireless Application Protocol
• WAP is an application communication protocol
• WAP is used to access services and information
• WAP is inherited from Internet standards
• WAP is for handheld devices such as mobile phones
• WAP is a protocol designed for micro browsers
• WAP enables the creating of web applications for mobile devices
• WAP uses the mark-up language WML (not HTML)
• WML is defined as an XML 1.0 application

People on the move need services, information and entertainment that can keep up with them. With access to mobile services, decisions and interactions happen here and now. The value of mobile services to end-users is boosted by three separate elements: personalization, time-sensitivity and location awareness. Combining these three effectively adds even more value.

Wireless application protocol (WAP) is a protocol that has successfully established a de facto standard for the way in which wireless technology is used for Internet access. WAP technology has been optimized for information delivery to thin-client devices, such as mobile phones.

Mobile services powered by Nokia and WAP have been widely accepted by users. By 2004, the number of WAP users in Western Europe is estimated to grow to well over 200 million (source: Cahners, In-Stat Group). In part, this growth is driven by the introduction of General Packet Radio Service (GPRS), WAP 2.0, Bluetooth and Mobile Commerce.

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WAP 2.0

WAP 2.0 is a re-engineering of WAP using a cut-down version of XHTML with end-to-end HTTP (i.e., dropping the gateway and custom protocol suite used to communicate with it). A WAP gateway can be used in conjunction with WAP 2.0; however, in this scenario, it is used as a standard proxy server. The WAP gateway’s role would then shift from one of translation to adding additional information to each request. This would be configured by the operator and could include telephone numbers, location, billing information, and handset information.

XHTML Mobile Profile (XHTML MP), the markup language defined in WAP 2.0, is made to work in mobile devices. It is a subset of XHTML and a superset of XHTML Basic. A version of cascading style sheets (CSS) called WAP CSS is supported by XHTML MP.

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