H.323
E171421
H.323 is an ITU-T standard that defines protocols for voice, video, and data communication over packet-based networks such as IP.
All labels observed (8)
| Label | Occurrences |
|---|---|
| H.323 canonical | 32 |
| ITU-T H.323 | 2 |
| H.323 gatekeepers | 1 |
| H.323 gateways | 1 |
| H.323 series | 1 |
| ITU-T H.323 standard | 1 |
| ITU-T Recommendation H.323 | 1 |
| Voice over IP | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1503637 — 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.323 Context triple: [Tandberg, technology, H.323]
-
A.
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.
-
B.
G.722
G.722 is a wideband audio codec standard that provides higher-quality voice transmission than traditional narrowband codecs, commonly used in VoIP and teleconferencing applications.
-
C.
G.729
G.729 is a widely used ITU-T audio codec standard that compresses voice for bandwidth-efficient transmission in VoIP and other telephony applications.
-
D.
G.711
G.711 is a widely used ITU-T audio codec standard for pulse code modulation (PCM) of voice in traditional telephony and VoIP systems.
-
E.
Tandberg
Tandberg is a Norwegian company best known for its video conferencing and telepresence solutions, which became part of Cisco Systems after its acquisition.
- 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.323 Target entity description: H.323 is an ITU-T standard that defines protocols for voice, video, and data communication over packet-based networks such as IP.
-
A.
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.
-
B.
G.722
G.722 is a wideband audio codec standard that provides higher-quality voice transmission than traditional narrowband codecs, commonly used in VoIP and teleconferencing applications.
-
C.
G.729
G.729 is a widely used ITU-T audio codec standard that compresses voice for bandwidth-efficient transmission in VoIP and other telephony applications.
-
D.
G.711
G.711 is a widely used ITU-T audio codec standard for pulse code modulation (PCM) of voice in traditional telephony and VoIP systems.
-
E.
Tandberg
Tandberg is a Norwegian company best known for its video conferencing and telepresence solutions, which became part of Cisco Systems after its acquisition.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
ITU-T Recommendation
ⓘ
communication protocol standard ⓘ |
| category |
VoIP protocol
ⓘ
multimedia communication protocol ⓘ |
| defines |
admission control mechanisms
ⓘ
call signaling protocols ⓘ control protocols ⓘ media transport protocols ⓘ registration mechanisms ⓘ status control mechanisms ⓘ |
| firstPublishedBy | ITU-T Study Group 16 ⓘ |
| focusesOn | packet-based multimedia communications ⓘ |
| includes |
H.225.0
ⓘ
H.235 security framework ⓘ H.245 ⓘ H.450 supplementary services ⓘ RAS protocol ⓘ |
| operatesOver |
IP networks
ⓘ
packet-based networks ⓘ |
| partOfSeries |
H-series Recommendations
ⓘ
linked to:
Series H
|
| provides |
call setup procedures
ⓘ
call teardown procedures ⓘ capability exchange procedures ⓘ logical channel signaling ⓘ |
| standardizedBy |
ITU-T
ⓘ
linked to:
ITU Telecommunication Standardization Sector
|
| supports |
Quality of Service mechanisms
ⓘ
T.120 data conferencing ⓘ audio codecs ⓘ authentication via H.235 ⓘ bandwidth management ⓘ call admission control ⓘ data communication ⓘ encryption via H.235 ⓘ interworking with ISDN ⓘ interworking with PSTN ⓘ interworking with SIP through gateways ⓘ multipoint communication ⓘ point-to-point communication ⓘ real-time multimedia conferencing ⓘ video codecs ⓘ video communication ⓘ voice communication ⓘ |
| usedIn |
IP-based PBX systems
ⓘ
enterprise telephony systems ⓘ video conferencing systems ⓘ |
| uses |
gatekeepers
ⓘ
gateways ⓘ multipoint control units ⓘ terminals ⓘ |
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.323 Description of subject: H.323 is an ITU-T standard that defines protocols for voice, video, and data communication over packet-based networks such as IP.
Referenced by (40)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: H.323
linked to: H.323
subject linked to:
MCUs (multipoint control units)
subject linked to:
MCUs (multipoint control units)
linked to: H.323
linked to: H.323
linked to: H.323
linked to: H.323
linked to: H.323
linked to: H.323
subject linked to:
T.120 for data conferencing
subject linked to:
H.324 multimedia over circuit-switched networks