	SIP Reference Guide
Table Of Contents
DNS Example
Elements and Architectures
Header Fields
Header Fields – Compact Forms
Header Parameters & Values
INVITE Client Transaction
INVITE Server Transaction
INVITE/200
Mapping Between SS7 USI and the SIP SDP (SS7 Origination)
Mapping Between the SIP SDP and SS7 USI/HLC (SIP Origination)
Mapping ISUP Cause Codes to SIP-I/SIP-T Responses
Mapping SIP-T Responses to ISUP Cause Codes
Mechanics: Location
Mechanics: Registration
Namespaces and Priority Values for the Resource Priority Header Field
NAPTR Records
Non-INVITE Client Transaction
Non-INVITE Server Transaction
Option Tags for SIP Extensions
Response Code
Security Mechanism Names
Session Description Protocol
SIP Events
SIP Methods
SIP Response to a Call Progress (CPG) Message
SIP Timers
SIP/SIPS URI Parameters
SIP-I Responses - ISUP Cause Codes
SIPS's Use of DNS
SRV Records
Types of DNS Resource Records
URI Purposes
Warning Codes
Glossary of SIP Acronyms
SIP References

Glossary of SIP Acronyms and Definitions

Other SIP Resources

	SIP Pocket Guide
	SIP Signaling Router Use Cases Multimedia
	SIP Sessions Blog
	SIP Signaling Router Application Handbook
	SIP Signaling Router (SSR) Use Cases Application Guide


AoR	Address of record
B2BUA	Back-to-back user agent
Binding	Association between an address of record with one or more contact addresses
Dialog	A peer-to-peer relationship between two user agents that persists for some time
IETF	Internet Engineering Task Force
lr	A URI parameter that indicates that RFC 3261 procedures for handling the Route header field are being followed
Reliability	Recovery from message delivery failure
RFC	IETF request for comments
RTP	Real-time transport protocol
SDP	Session description protocol
Session	An exchange of data between an association of participants
SIP	Session Initiation Protocol
TU	Transaction user
UA	User agent
UAC	User agent client
UAS	User agent server
URI	Uniform resource identifier
URL	Uniform resource locator
Usage	Relationship between endpoints within a dialog

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