Internet Communications Using SIP : Delivering VoIP and Multimedia Services With Session Initiation Protocol {2Nd Ed.}

Figure 13.4 Commercial presence and IM products: (a) Microsoft Messenger integrated with Microsoft Office 2003 and (b) the Count ...

Figure13.5 SIP NOTIFY flow SIP event packages have been proposed and developed for numerous appli- cations, some of which have b ...

■■ Network preemption events for priority calls [14] ■■ Last but not least, presenceas described in the following section. Prese ...

We will show here the first three messages to better understand how pres- ence works. Message 1: SUBSCRIBE watcher->example.c ...

Note in the last line, [PIDF Document]stands for the Presence Information Data Formatdocument that will be described in the foll ...

Figure 13.7 The structure of presence information The example will now make it easier to understand some presence elements in th ...

The PIDF standard has great flexibility because of the XML data elements, as shown in the example, and this flexibility can lead ...

We refer the reader to the original document on the presence data model [15] for a detailed discussion of the meaning of the var ...

■■ meeting ■■ on the phone ■■ playing ■■ performance(cinema, lecture, theater) ■■ presentation ■■ shopping ■■ travel ■■ vacation ...

■■ bar ■■ bus ■■ cafe ■■ classroom ■■ club ■■... ■■ Privacy element (the presence info may be intercepted in the vicinity) ■■ au ...

SIP Extensions for Instant Messaging Applications that integrate IM with presence have been in use on the Internet for a long ti ...

Figure 13.9 Example message flow for SIP based instant messaging SIPMESSAGEis similar to the SIPINVITE. Here are two message exa ...

Message 3 SIP/2.0 200 OK Via: SIP/2.0/TCP proxy.domain.com;branch=z9hG4bK123 ;received=192.0.2.1 Via: SIP/2.0/TCP user1pc.domain ...

References [1] “Common Profile for Instant Messaging” by J. Peterson:. RFC 3860, IETF, August 2004. [2] “Session Initiation Prot ...

[21] “RPID: Rich Presence Extensions to the Presence Information Data Format (PIDF)” by H. Schulzrinne et al. Internet Draft, IE ...

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245 We will present in this chapter conferencing services based on SIP. Though the interest in SIP is at present mostly because ...

■■ So-called Web Conferencing in which a browser window is used to pre- sent conferencing information such as a presentation or ...

Table 14.1 SIP Conference Models CONFERENCE MODELS HOW IT WORKS Endpoint mixing Small conferences with three to nine participan ...

Each conference model shown in Table 14.1 differs from the other models by one or more of the following: ■■ Scale of the confere ...