H.245
E663662
H.245 is an ITU-T control protocol used in multimedia communication systems to negotiate channel usage and capabilities between endpoints.
All labels observed (2)
| Label | Occurrences |
|---|---|
| H.245 canonical | 1 |
| H.245 control protocol | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7428284 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: H.245 Context triple: [H.323, includes, H.245]
-
A.
H.323
H.323 is an ITU-T standard that defines protocols for voice, video, and data communication over packet-based networks such as IP.
-
B.
H.248
H.248 is an ITU-T protocol, also known as Megaco, used for controlling media gateways in next-generation and IP multimedia networks.
-
C.
H.263
H.263 is a video compression standard developed primarily for low-bitrate communication such as video conferencing and early internet video applications.
-
D.
RFC 5245
RFC 5245 is the IETF specification that standardizes Interactive Connectivity Establishment (ICE), a framework for NAT traversal used to establish media and data connections in real-time communication protocols like SIP and WebRTC.
-
E.
Session Description Protocol
Session Description Protocol (SDP) is a format used in multimedia communication systems to describe streaming media sessions for purposes such as session announcement, invitation, and negotiation of media parameters.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: H.245 Target entity description: H.245 is an ITU-T control protocol used in multimedia communication systems to negotiate channel usage and capabilities between endpoints.
-
A.
H.323
H.323 is an ITU-T standard that defines protocols for voice, video, and data communication over packet-based networks such as IP.
-
B.
H.248
H.248 is an ITU-T protocol, also known as Megaco, used for controlling media gateways in next-generation and IP multimedia networks.
-
C.
H.263
H.263 is a video compression standard developed primarily for low-bitrate communication such as video conferencing and early internet video applications.
-
D.
RFC 5245
RFC 5245 is the IETF specification that standardizes Interactive Connectivity Establishment (ICE), a framework for NAT traversal used to establish media and data connections in real-time communication protocols like SIP and WebRTC.
-
E.
Session Description Protocol
Session Description Protocol (SDP) is a format used in multimedia communication systems to describe streaming media sessions for purposes such as session announcement, invitation, and negotiation of media parameters.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
ITU-T Recommendation
ⓘ
control protocol ⓘ multimedia communication protocol ⓘ |
| belongsToSeries | H-series NERFINISHED ⓘ |
| category | real-time communication protocol ⓘ |
| defines |
capability exchange procedures
ⓘ
conference control procedures ⓘ control channel procedures ⓘ flow control procedures ⓘ logical channel signaling ⓘ master-slave determination procedures ⓘ round-trip delay determination procedures ⓘ |
| enables |
bandwidth management via flow control
ⓘ
dynamic capability negotiation ⓘ interoperability between different terminals ⓘ |
| layer | control layer above transport ⓘ |
| operatesBetween | communication endpoints ⓘ |
| organization | International Telecommunication Union NERFINISHED ⓘ |
| purpose |
negotiate capabilities between endpoints
ⓘ
negotiate channel usage between endpoints ⓘ |
| relatedTo |
H.225.0
ⓘ
H.320 ⓘ H.323 NERFINISHED ⓘ H.324 ⓘ |
| roleInH.323 | control signaling between endpoints ⓘ |
| scope | call control and capability negotiation ⓘ |
| sector | ITU Telecommunication Standardization Sector NERFINISHED ⓘ |
| specifies |
message formats for control signaling
ⓘ
state machines for control procedures ⓘ |
| standardizedBy | ITU-T NERFINISHED ⓘ |
| status | international standard ⓘ |
| supports |
audio capabilities negotiation
ⓘ
data capabilities negotiation ⓘ logical channel closure ⓘ logical channel establishment ⓘ logical channel modification ⓘ video capabilities negotiation ⓘ |
| transportedOver | TCP in H.323 ⓘ |
| usedIn |
H.320 systems
NERFINISHED
ⓘ
H.323 systems ⓘ H.324 systems NERFINISHED ⓘ multimedia communication systems ⓘ videoconferencing systems ⓘ voice over IP systems ⓘ |
| usesEncoding |
ASN.1
NERFINISHED
ⓘ
PER ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: H.245 Description of subject: H.245 is an ITU-T control protocol used in multimedia communication systems to negotiate channel usage and capabilities between endpoints.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.