PRTC
E271038
PRTC stands for Primary Reference Time Clock, a highly accurate timing source used in telecommunications networks to provide traceable time and phase synchronization.
All labels observed (1)
| Label | Occurrences |
|---|---|
| PRTC canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T2484658 — 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: PRTC Context triple: [ITU-T G.8272, abbreviation, PRTC]
-
A.
PRTC
PRTC is a public transit agency serving Northern Virginia with commuter and local bus services.
-
B.
PRT
PRT is the three-letter ISO 3166-1 alpha-3 country code assigned to Portugal.
-
C.
PRA
PRA is the commonly used abbreviation for the Postal Reorganization Act of 1970, the U.S. federal law that transformed the Post Office Department into the United States Postal Service.
-
D.
PRU
PRU is the stock ticker symbol for Prudential Financial, a major U.S.-based financial services and insurance company.
-
E.
PRR
PRR is the abbreviation commonly used for the Pennsylvania Railroad Company, once one of the largest and most influential railroads in the United States.
- 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: PRTC Target entity description: PRTC stands for Primary Reference Time Clock, a highly accurate timing source used in telecommunications networks to provide traceable time and phase synchronization.
-
A.
PRTC
PRTC is a public transit agency serving Northern Virginia with commuter and local bus services.
-
B.
PRT
PRT is the three-letter ISO 3166-1 alpha-3 country code assigned to Portugal.
-
C.
PRA
PRA is the commonly used abbreviation for the Postal Reorganization Act of 1970, the U.S. federal law that transformed the Post Office Department into the United States Postal Service.
-
D.
PRU
PRU is the stock ticker symbol for Prudential Financial, a major U.S.-based financial services and insurance company.
-
E.
PRR
PRR is the abbreviation commonly used for the Pennsylvania Railroad Company, once one of the largest and most influential railroads in the United States.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
telecommunications timing device
ⓘ
time synchronization equipment ⓘ |
| abbreviation | PRTC self-linksurface differs ⓘ |
| category | network infrastructure component ⓘ |
| conformsTo | ITU-T synchronization recommendations ⓘ |
| ensures |
low timing jitter
ⓘ
low timing wander ⓘ network-wide timing consistency ⓘ traceability to UTC ⓘ |
| goal | maintain network timing accuracy within specified limits ⓘ |
| hasProperty |
high accuracy
ⓘ
high stability ⓘ traceability to a primary time standard ⓘ |
| mayBeDerivedFrom |
GNSS receiver
ⓘ
atomic clock ⓘ cesium clock ⓘ optical clock ⓘ |
| monitoredBy | network management systems ⓘ |
| output |
frequency reference signals
ⓘ
standardized timing signals ⓘ time-of-day reference signals ⓘ |
| partOf | telecom synchronization hierarchy ⓘ |
| provides |
phase synchronization
ⓘ
traceable time synchronization ⓘ |
| relatedTo |
Network Time Protocol
ⓘ
IEEE 1588 Precision Time Protocol standard ⓘ
surface form:
Precision Time Protocol
Primary Reference Source ⓘ synchronous Ethernet ⓘ
surface form:
Synchronous Ethernet
|
| requires |
environmental stability
ⓘ
monitoring and management ⓘ |
| roleInNetwork | top-level timing reference ⓘ |
| standsFor | Primary Reference Time Clock ⓘ |
| supports |
frequency synchronization
ⓘ
phase synchronization ⓘ time-of-day synchronization ⓘ |
| supportsApplication |
5G synchronization
ⓘ
LTE-TDD synchronization ⓘ synchronous digital hierarchy ⓘ synchronous optical networking ⓘ |
| synchronizes | network elements ⓘ |
| usedBy |
data centers
ⓘ
fixed-line operators ⓘ internet service providers ⓘ mobile operators ⓘ |
| usedFor |
mobile network synchronization
ⓘ
packet network synchronization ⓘ transport network synchronization ⓘ |
| usedIn | telecommunications networks ⓘ |
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: PRTC Description of subject: PRTC stands for Primary Reference Time Clock, a highly accurate timing source used in telecommunications networks to provide traceable time and phase synchronization.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Primary Reference Time Clock