Streaming method for transmitting telephone system notifications to internet terminal devices in real time
View Patent ↗In the course of an application involving real-time notification of a client by a telephone switching system, a connection between the client and a server is opened. Notification messages transmitted from the telephone switching system to the server are adjusted and sent to the client in the format of a programming language code executable by the client's browser. The programming language codes are subsequently executed by the browser, whereby the respective notification messages are displayed at the client. For transmission of the notification messages from the server to the browser, as streaming method such as HTTP streaming is use so that the connection remains open while notification messages are to be sent. The presented method can be based on standardized protocols, entails little protocol overhead and allows for facile treatment of security issues.
1. A method for an application involving real-time notification of a client by a telephone switching system, comprising:
a) opening a connection between the client and a server;
b) transmitting notification messages from the telephone switching system to the server using a networking protocol;
c) transforming the notification messages at the server into a programming language code and using said networking protocol for sending the programming language code to the client, wherein the programming language code is executable by the client's browser;
d) using an HTTP streaming mechanism for transmission of the notification from the server to the browser through the open connection, whereby the connection between the client and the server remains open in the intervening period between the transmission of individual notification messages; and
e) executing the programming language codes by the browser whereby the respective notification messages are displayed or outputted at the client.
2. The method according to claim 1 , further comprising: closing the client-server connection as no more real-time notification messages are to be sent within the application.
3. The method according to claim 1 , further comprising: opening the client-server connection by invoking a server side Java applet.
4. The method according to claim 1 , further comprising: using the HTTP protocol for the client-server connection.
5. The method according to claim 1 , further comprising: sending regularly messages from the client to the server to enquire whether the connection still needs to be kept open.
6. The method according to claim 1 , further comprising:
a) transmitting the notification messages from the telephone switching system to a media gateway controller or an SCP;
b) adjusting the notification messages for transmission to the server; and
c) transmitting the notification messages from the media gateway controller or the SCP to the server.
7. The method according to claim 1 , wherein
a) the application is given by a phone conference; and
b) the server comprises means for supporting phone conference services.
8. The method according to claim 1 , wherein the telephone switching system is given by an ISDN switch or a PBX.
9. The method according to claim 1 , wherein programming language codes for execution by client-side browsers are generated in one of JavaScript, XML, or HTML or Java-serialised objects.
10. A method for an application involving real-time notification of a client by a telephone switching system, comprising:
a) opening a connection between the client and a server;
b) transmitting notification messages from the telephone switching system to the server using a networking protocol;
c) transforming the notification messages at the server into a JavaScript programming language code and using said networking protocol for sending the JavaScript programming language code to the client, wherein the JavaScript programming language code is executable by the client's browser;
d) using an HTTP streaming mechanism for transmission of the notification from the server to the browser through the open connection, whereby the connection between the client and the server remains open in the intervening period between the transmission of individual notification messages; and
e) executing the JavaScript programming language codes by the browser whereby the respective notification messages are displayed or outputted at the client.