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

209 We will show in this chapter how SIP-based voicemail, presence, and e-mail can support unified messaging on the same Interne ...

On the negative side, the proliferation of messaging services, such as voice- mail on PBXs, for PSTN phones, for mobile phones, ...

these requirements, but it also needs to present a uniform approach for the three message store access phases: User and system ...

The example in Figure 12.1 shows the following steps for a voicemail appli- cation [1]. The high-level message flow is as follow ...

their entire content. Replay control is exercised by moving the cursor to the desired message part marked by timestamps. PC retr ...

Depositing of Voice Messages Voice messages can be created for various reasons, such as if the called party is not available, bu ...

Table 12.1 (continued) REASON FOR REDIRECT VALUE Unconditional 302 Deflection During Alerting 487 Deflection Immediate Response ...

The main messages in the flow diagram in Figure 12.3 are given here. Message 3 is a redirect of the type 302 to the voicemail “s ...

Content-Type: application/sdp Content-Length: ... * SDP goes here * Notification for Waiting Messages Traditional analog and PBX ...

Figure 12.4 Message waiting notification using SIP events Writing out in full the first three messages from Figure 12.4 will exp ...

Date: Thu, 12 Apr 2005 15:30:00 GMT Call-ID: [email protected] Max-Forwards: 70 CSeq: 4 SUBSCRIBE Contact: <sips:henry ...

Rich Message Notification Format Though richer notification than in the previous example (simple-message- summary) has not been ...

“You have 101 untouched email messages, one urgent message” “You have no skipped email messages” “You have four messages flagged ...

[5] “SIP URIs for Applications such as Voicemail and Interactive Voice” C. Jen- nings et al. Internet Draft, IETF, November 2005 ...

223 As of this writing, Instant Messaging (IM) services that also provide VoIP seem to surpass by far the VoIP services offered ...

The Potential of SIP Presence, Events, and IM Presence has been predicted to be the dial tone of the twenty-first century. Here ...

The Evolution of IM and Presence The first widespread use of IM was ICQ and AOL’s own Instant Messenger, which proved to be so p ...

The IETF Model for Presence and IM Presence and IM are made possible by the packet nature of the Internet and may merit dedicate ...

As we will discuss later, a principal can also be an application. If the watcher declares an application to be just another budd ...

Client Server and Peer-to-Peer Presence and IM In keeping with the end-to-end control principle of the Internet, presence, and I ...