A Session Initiation Protocol (SIP) Event Package for Key Press Stimulus (KPML)

A Framework for Application Interaction in the Session Initiation Protocol (SIP)

“…For simpler phones without a display, the user interface can be described by a Keypad Markup Language request document [8]. As the user enters digits in the keypad, they are passed to the user interface, which generates user interface events that can be transported to the application.…”

“…The Keypad Markup Language (KPML) was designed to support exactly this kind of need [8]. It models the keypad on a phone and allows an application to be informed when any sequence of keys has been pressed.…”

“…A markup language describes a logical flow of presentation of information to the user, a collection of information from the user, and a transmission of that information to an application. Examples of markup languages include HTML, Wireless Markup Language (WML), VoiceXML, and the Keypad Markup Language (KPML) [8].…”

“…[8], and the Supported header field indicates support for the Globally Routable UA URI (GRUU) [9] specification (which, in turn, means that the Contact header field contains a GRUU), it means that the UA can instantiate presentation-free user interface components. In this case, the application can push presentation-free user interface components according to the rules of Section 8.1.2.…”

“…This SUBSCRIBE request creates a separate dialog. The SUBSCRIBE request MUST use the KPML [8] event package. The body of the SUBSCRIBE request contains the markup document that defines the conditions under which the application wishes to be notified of user input.…”