Glossary

Session Boarder Controller is an IP-to-IP network element that resides at the edge of the network and manages sessions. A session in this context is any real-time IP communication be it voice, video or multimedia using common protocols such as SIP, H.323, MGCP, MEGACO even though some vendors extend its ...

Stream Control Transmission Protocol (SCTP) is a transmission layer, such asTCP or UDP.SCTP is a connection-oriented protocol (such as TCP), that deals with datagrams (such as UDP) rather than byte streams (such as TCP).Unlike TCP, SCTP provides a number of functions thatare critical for telephony reliable signaling transport over a ...

An SDO is an organization dealing in one way or another in standardization. Some SDOs deal with specification of standards while others are more focused around interoperability or certification of products. Some examples of SDOs dealing with VoIP: GSMA IETF IMTC ITU-T UCIF

SDP (Session Description Protocol -RFC 4566) is the protocol used to describe multimedia session announcement, multimedia session invitation, and other forms of multimedia session initiation. A multimedia session is defined, forthese purposes, as a set of media streams that exist for a duration of time.SDP packets usually include the following ...

SIMPLE stands for Session initiation protocol for Instant Messaging and Presence Leveraging Extensions. SIMPLE is defined by IETF and uses another IETF protocol, SIP as a core. SIMPLE is an open standard which allows development of interoperable Presence and Instant messaging applications. SIMPLE protocol functionality is based on the number ...

The Session Initiation Protocol (SIP) is a signaling protocol for initiating, managing and terminating voice and video sessions across packet networks. Borrowing from Internet protocols, such as HTTP and SMTP, SIP is text-encoded and highly extensible. SIP can be extended to accommodate features and services such as call control services, ...

The SIP Forum is an industry association with members from the leading IP communications companies. Its mission: To advance the adoption of IP communications products and services based on SIP.The Forum promotes SIP as the technology of choice for the control of real-time multimedia communication sessions throughout the Internet, corporate ...

The SIPconnect Technical Recommendation is an industry-wide, standards-based approach to direct IP peering between SIP-enabled IP PBXs and VoIP service provider networks.BenefitsThe implementation of the SIPconnect standard benefits many participants in the delivery of voice communications.For end users in the small business or large enterprise, SIPconnect eliminates, or greatly reduces, ...

The SIPit, or Session Initiation Protocol Interoperability Test, is a weeklong event where people bring their SIP implementations to ensure they work together.Each SIPit is open to anyone with a working SIP implementation. The goal of the events is to refine both the protocol and its implementations. SIPit is a ...

The Session Traversal Utilities for NAT (STUN) protocol allows entities behind a Network Address Translators (NAT) to learnthe address bindings allocated by the NAT, to keep those bindings open, and communicate with other STUN-aware entities to validate connectivity and vitality. The STUN protocol was developed as a solution to some ...

The SuperOp! is an annual IMTC event where vendors gather to test their products for interoperability of multimedia products that are handled by the various activity groups of the IMTC. The following types of protocols are being tested at SuperOp! interoperability events: H.323 and SIP enterprise video conferencing Telepresence 3G-324M ...