* Session Initiation Protocol ( SIP ) SIP is most often used for IP connected PBX

* An optional signaling protocol such as H. 323 or Session Initiation Protocol ( SIP )

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SDP started off as a component of the Session Announcement Protocol ( SAP ), but found other uses in conjunction with Real-time Transport Protocol ( RTP ), Real-time Streaming Protocol ( RTSP ), Session Initiation Protocol ( SIP ) and even as a standalone format for describing multicast sessions.

* AppleTalk Session Protocol, a session layer protocol used by the AppleTalk suite of protocols

Built on top of AppleTalk Session Protocol ( for legacy AFP over DDP ) or the Data Stream Interface ( for AFP over TCP ), it provides services for authenticating users ( extensible to different authentication methods including two-way random-number exchange ) and for performing operations specific to the Macintosh HFS filesystem.

* Session Announcement Protocol

This reply includes the presentation description, typically in Session Description Protocol ( SDP ) format.

* An optional media description protocol such as Session Description Protocol

* The RTP profile for Audio and video conferences with minimal control ( RFC 3551 ) defines a set of static payload type assignments, and a mechanism for mapping between a payload format, and a payload type identifier ( in header ) using Session Description Protocol ( SDP ).

Such examples are the realm identifiers used in the Session Initiation Protocol ( SIP ), the DomainKeys used to verify DNS domains in e-mail systems, and in many other Uniform Resource Identifiers ( URIs ).

There have been several attempts to create a unified standard for instant messaging: IETF's Session Initiation Protocol ( SIP ) and SIP for Instant Messaging and Presence Leveraging Extensions ( SIMPLE ), Application Exchange ( APEX ), Instant Messaging and Presence Protocol ( IMPP ), the open XML-based Extensible Messaging and Presence Protocol ( XMPP ), and Open Mobile Alliance's Instant Messaging and Presence Service developed specifically for mobile devices.

* Session Initiation Protocol ( SIP )

In particular, the Session Initiation Protocol ( SIP ) has gained widespread VoIP market penetration.

CallManager acts as a signaling proxy for call events initiated over other common protocols such as H. 323, Session Initiation Protocol ( SIP ), ISDN and / or MGCP.

* RFC 3261 SIP: Session Initiation Protocol, the authors use Biloxi in an example to explain how a call is made through two SIP proxies.

The introduction of Session Initiation Protocol ( SIP ) means that point-to-point communications are no longer restricted to voice calls but can now be extended to multimedia technologies such as video.

* SIP, Session Initiation Protocol

It has a variety of features, such as instant messaging, presence awareness, support for Session Initiation Protocol ( SIP ), file transfer, application sharing and whiteboarding.

TLS is also a standard method to protect Session Initiation Protocol ( SIP ) application signaling.

XMPP has often been regarded as a competitor to SIMPLE, based on the Session Initiation Protocol ( SIP ) protocol, as the standard protocol for instant messaging and presence notification.

The softswitching technology is solely based on the SIP, which is an abbreviation of Session Initiation Protocol, which assures that the communication will be fee of any types of errors.

SIMPLE, the session initiation protocol for instant messaging and presence leveraging extensions, is an instant messaging ( IM ) and presence protocol suite based on Session Initiation Protocol ( SIP ) managed by the IETF.

Signals can be, but aren ’ t limited to, H. 323 and Session Initiation Protocol ( SIP ) Protocols.

The URI can then be used for obtaining the Internet Protocol addresses for services such as the Session Initiation Protocol ( SIP ) VoIP telephony.

The 3rd Generation Partnership Project ( 3GPP ) defined a technical specification ( TS 24. 147 ) for conferencing within the IP Multimedia Subsystem ( IMS ) based on the Session Initiation Protocol ( SIP ), SIP Events, the Session Description Protocol ( SDP ) and the Binary Floor Control Protocol ( BFCP, aka RFC4582 ).