 Session Initiation Protocol (SIP) is a signaling protocol used for establishing sessions in an IP network. A session could be a simple two-way telephone call or it could be a collaborative multi-media conference session. The ability to establish these sessions means that a host of innovative services becomes possible, such as voice-enriched e-commerce, web page click-to-dial, Instant Messaging with buddy lists, and IP Centrex services. |
| SIP is a request-response protocol that closely resembles two other Internet protocols, HTTP and SMTP (the protocols that power the world wide web and email); consequently, SIP sits comfortably alongside Internet applications. Using SIP, telephony becomes another web application and integrates easily into other Internet services. SIP is a simple toolkit that service providers can use to build converged voice and multimedia services. |
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SIP presence and instant messaging to improve responsiveness and one-call resolution: IP Agent 6.0
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Flexible connectivity options increase choices: pure VoIP, voice path to home phone, control
of desktop IP, or digital phones or third-party PBX phones
- Instant message with other agents and supervisors to resolve customer issues the first time
- Improved one call resolution with built-in advanced screen pop using Advanced Segmentation
- Faster calls with click to dial from Outlook/browsers and speed dial lists for faster calls
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| How it Works |
SIP is a request-response protocol that closely resembles two other Internet protocols, HTTP and SMTP (the protocols that power the world wide web and email); consequently, SIP sits comfortably alongside Internet applications. Using SIP, telephony becomes another web application and integrates easily into other Internet services. SIP is a simple toolkit that service providers can use to build converged voice and multimedia services.
In order to provide telephony services there is a need for a number of different standards and protocols to come together - specifically to ensure transport (RTP), to authenticate users (RADIUS, DIAMETER), to provide directories (LDAP), to be able to guarantee voice quality (RSVP, YESSIR) and to inter-work with today's telephone network. 
Session Initiation Protocol (SIP) has become a strong, catalytic force shaping today's
telecom industry. This IETF driven protocol represents a key ingredient in the converging
world of telecommunications based applications. But SIP does not do everything, and it
does not solve every problem. SIP has limits, and SIP works with other protocols to get the
job done.
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