Session Initiation Protocol
E523064
Session Initiation Protocol (SIP) is a signaling protocol used to establish, modify, and terminate real-time communication sessions such as voice and video calls over IP networks.
Observed surface forms (2)
| Surface form | Occurrences |
|---|---|
| SIP | 2 |
| Session Initiation Protocol (SIP) | 1 |
Statements (74)
| Predicate | Object |
|---|---|
| instanceOf |
application-layer protocol
ⓘ
signaling protocol ⓘ |
| abbreviation | SIP NERFINISHED ⓘ |
| definedInRFC | RFC 3261 ⓘ |
| designGoal |
extensibility
ⓘ
integration with Internet applications ⓘ mobility support ⓘ scalability ⓘ |
| extendedBy |
SIP REFER method
ⓘ
SIP UPDATE method ⓘ SIP for Instant Messaging and Presence Leveraging Extensions NERFINISHED ⓘ |
| hasExtensionFramework | yes ⓘ |
| messageFormat | text-based ⓘ |
| operatesAtLayer | application layer ⓘ |
| revises | RFC 2543 NERFINISHED ⓘ |
| separates |
media
ⓘ
signaling ⓘ |
| standardizedBy | Internet Engineering Task Force NERFINISHED ⓘ |
| supportsAddressingScheme |
SIP URI
ⓘ
SIP address-of-record ⓘ |
| supportsCommunicationType |
instant messaging
ⓘ
multimedia ⓘ presence ⓘ video ⓘ voice ⓘ |
| supportsMethod |
ACK
ⓘ
BYE ⓘ CANCEL ⓘ INFO ⓘ INVITE ⓘ NOTIFY ⓘ OPTIONS ⓘ PRACK ⓘ PUBLISH ⓘ REGISTER ⓘ SUBSCRIBE ⓘ UPDATE ⓘ |
| supportsMobilityFeature |
call routing
ⓘ
user location ⓘ user registration ⓘ |
| supportsNATTraversalExtension |
ICE
NERFINISHED
ⓘ
STUN NERFINISHED ⓘ TURN ⓘ |
| supportsNetworkElement |
proxy server
ⓘ
redirect server ⓘ registrar ⓘ |
| supportsProxying | yes ⓘ |
| supportsQoSMechanism | resource reservation signaling via SDP ⓘ |
| supportsRedirect | yes ⓘ |
| supportsReliabilityExtension | PRACK ⓘ |
| supportsResponseCodeClass |
1xx provisional
ⓘ
2xx success ⓘ 3xx redirection ⓘ 4xx client error ⓘ 5xx server error ⓘ 6xx global failure ⓘ |
| supportsSecurityMechanism |
Digest authentication
ⓘ
S/MIME NERFINISHED ⓘ TLS encryption ⓘ |
| supportsUserAgent |
user agent client
ⓘ
user agent server ⓘ |
| typicallyUsedWith | Real-time Transport Protocol NERFINISHED ⓘ |
| usedFor |
establishing communication sessions
ⓘ
modifying communication sessions ⓘ terminating communication sessions ⓘ |
| usedIn |
IP telephony
ⓘ
Unified Communications NERFINISHED ⓘ Voice over IP ⓘ |
| usedOver | IP networks ⓘ |
| usesDescriptionProtocol | Session Description Protocol NERFINISHED ⓘ |
| usesTransportProtocol |
SCTP
NERFINISHED
ⓘ
TCP NERFINISHED ⓘ TLS NERFINISHED ⓘ UDP NERFINISHED ⓘ |
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
P-CSCF
this entity surface form:
SIP
subject surface form:
I-CSCF
this entity surface form:
Session Initiation Protocol (SIP)
this entity surface form:
SIP
subject surface form:
S-CSCF