D-AMPS
E565182
D-AMPS (Digital Advanced Mobile Phone System) is a second-generation (2G) digital mobile telephony standard that evolved from the analog AMPS system to provide improved capacity and voice quality.
All labels observed (1)
| Label | Occurrences |
|---|---|
| D-AMPS canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6042244 — 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: D-AMPS Context triple: [Time Division Multiple Access, usedIn, D-AMPS]
-
A.
GSM
GSM is the common abbreviation for Great St Mary’s Church, the historic University Church located in the center of Cambridge, England.
-
B.
GSM
GSM is a second-generation (2G) digital mobile communication standard that became the global foundation for cellular voice and basic data services.
-
C.
IMT-2000 family
The IMT-2000 family is the ITU-defined global standard framework for third-generation (3G) mobile communication systems, encompassing multiple technologies such as UMTS and CDMA2000.
-
D.
UMTS
UMTS is a third-generation (3G) mobile telecommunications system that provides higher-speed voice and data services over cellular networks.
-
E.
UTRAN
UTRAN (UMTS Terrestrial Radio Access Network) is the 3G radio access network architecture used in UMTS mobile communication systems to connect user devices to the core network.
- 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: D-AMPS Target entity description: D-AMPS (Digital Advanced Mobile Phone System) is a second-generation (2G) digital mobile telephony standard that evolved from the analog AMPS system to provide improved capacity and voice quality.
-
A.
GSM
GSM is the common abbreviation for Great St Mary’s Church, the historic University Church located in the center of Cambridge, England.
-
B.
GSM
GSM is a second-generation (2G) digital mobile communication standard that became the global foundation for cellular voice and basic data services.
-
C.
IMT-2000 family
The IMT-2000 family is the ITU-defined global standard framework for third-generation (3G) mobile communication systems, encompassing multiple technologies such as UMTS and CDMA2000.
-
D.
UMTS
UMTS is a third-generation (3G) mobile telecommunications system that provides higher-speed voice and data services over cellular networks.
-
E.
UTRAN
UTRAN (UMTS Terrestrial Radio Access Network) is the 3G radio access network architecture used in UMTS mobile communication systems to connect user devices to the core network.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
mobile communication standard
ⓘ
second-generation mobile network technology ⓘ |
| abbreviationOf | Digital Advanced Mobile Phone System NERFINISHED ⓘ |
| basedOn | AMPS NERFINISHED ⓘ |
| channelAccess | time-division multiple access ⓘ |
| compatibility | backward compatible with AMPS ⓘ |
| competesWith |
GSM
NERFINISHED
ⓘ
IS-95 CDMA ⓘ |
| dataCapability | limited low-rate data ⓘ |
| deploymentStart | early 1990s ⓘ |
| evolvedFrom | AMPS NERFINISHED ⓘ |
| fullName | Digital Advanced Mobile Phone System NERFINISHED ⓘ |
| generation | 2G ⓘ |
| goal |
improve capacity over AMPS
ⓘ
improve voice quality over AMPS ⓘ |
| improvementOver |
analog AMPS capacity
ⓘ
analog AMPS voice quality ⓘ |
| multipleAccessScheme | TDMA ⓘ |
| networkArchitecture | cellular ⓘ |
| networkGeneration | second generation ⓘ |
| networkType | digital cellular ⓘ |
| operatesIn |
1900 MHz band
ⓘ
800 MHz band ⓘ |
| predecessor | AMPS NERFINISHED ⓘ |
| primaryMarket |
Canada
NERFINISHED
ⓘ
United States NERFINISHED ⓘ |
| primaryUse | mobile telephony ⓘ |
| radioInterface | digital ⓘ |
| regionOfUse |
Asia
NERFINISHED
ⓘ
Latin America NERFINISHED ⓘ North America NERFINISHED ⓘ |
| serviceType | circuit-switched voice ⓘ |
| standardCategory | 2G TDMA standard ⓘ |
| standardFamily |
IS-136
NERFINISHED
ⓘ
IS-54 NERFINISHED ⓘ |
| standardizedBy | TIA NERFINISHED ⓘ |
| status | largely obsolete ⓘ |
| successor |
CDMA-based 2G systems
ⓘ
GSM NERFINISHED ⓘ |
| supportsRoamingWith | AMPS networks ⓘ |
| supportsService |
SMS
ⓘ
voice calls ⓘ |
| technologyType | TDMA-based system ⓘ |
| usesDuplexing | FDD ⓘ |
| usesModulation | π/4 DQPSK ⓘ |
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: D-AMPS Description of subject: D-AMPS (Digital Advanced Mobile Phone System) is a second-generation (2G) digital mobile telephony standard that evolved from the analog AMPS system to provide improved capacity and voice quality.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.