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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
DNS
Example
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
Print
$ORIGIN tekelec.com.
10m NAPTR 50 50 “s” “SIP+D2U” “” _sip._udp.naptr-udp
_sip._udp.naptr-udp 10m SRV 0 1 5060 llama
_sip._udp.naptr-udp 10m SRV 10 1 5060 lt
_sip._udp 10m SRV 0 1 5060 llama
_sip._udp 10m SRV 10 1 5060 lt
lt IN A 10.0.0.1
llama IN A 10.0.0.2
Notes:
This zone is set to prefer SIP over UDP
Normally llama is used, but traffic can failover to lt
The bare SRV records are there for clients that don’t support NAPTR
