Here are some of the most significant changes we will discuss: Understanding what changed, why it changed, and how that bears out for incident energy calculations will help to clarify the impact on operations and maintenance. If you are responsible for facility electrical operations, you may have heard of the recent updates to IEEE 1584 “IEEE Guide for Performing Arc-Flash Hazard Calculations.” The previous major edition of the standard was in 2002, and many changes have been made in the 2018 version. 125 17.1.1.1 Overview of INVITE Transaction. 120 16.12.1.3 Rewriting Record-Route Header Field Values. 118 16.12.1.2 Traversing a Strict-Routing Proxy. 116 16.12 Summary of Proxy Route Processing. 89 15.1 Terminating a Session with a BYE Request. RFC 3261 SIP: Session Initiation Protocol June 2002 13.3.1.3 The INVITE is Rejected. 59ġ0.2.1.1 Setting the Expiration Interval of Contact Addresses 60ġ0.2.1.2 Preferences among Contact Addresses. 56 10.2 Constructing the REGISTER Request.
49 8.2.6.1 Sending a Provisional Response. RFC 3261 SIP: Session Initiation Protocol June 2002 8.2.6 Generating the Response. 40 8.1.1.10 Additional Message Components. RFC 3261 SIP: Session Initiation Protocol June 2002ġ Introduction. SIP runs on top of several different transport protocols. SIP also provides a registration function thatĪllows users to upload their current locations for use by proxy Services, implement provider call-routing policies, and provideįeatures to users. To the user's current location, authenticate and authorize users for SIP makes use of elements called proxy servers to help route requests
That allow participants to agree on a set of compatible media types.
SIP invitations used to create sessions carry session descriptions These sessions include Internet telephone calls, multimediaĭistribution, and multimedia conferences. Modifying, and terminating sessions with one or more participants. This document describes Session Initiation Protocol (SIP), anĪpplication-layer control (signaling) protocol for creating, Distribution of this memo is unlimited.Ĭopyright (C) The Internet Society (2002). Official Protocol Standards" (STD 1) for the standardization stateĪnd status of this protocol. Please refer to the current edition of the "Internet Internet community, and requests discussion and suggestions for This document specifies an Internet standards track protocol for the RFC 3261: SIP: Session Initiation Protocol
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