What is WAP Push?

WAP Push is essentially an extension to SMS that enables the recipient of the WAP Push message to immediately view an online page of content in one click...

A WAP Push is an SMS message which contains a link to a WAP page. When a compatible handset receives a WAP Push message, it allows the user to access that WAP content.

Usefull Links :
http://developer.openwave.com/docs/WAP_Push_1201.pdf
http://developer.openwave.com/docs/wappush_vs_sms.pdf
http://www.visualtron.com/
http://www.winplc.com/solutions/wap-push.aspx
PHP Class for WAP PUSH: http://www.phpclasses.org/browse/package/1971.html
Create WAP Push in java:
http://www.ericsson.com/mobilityworld/sub/open/technologies/open_development_tips/tools/wap_push_sdk