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.
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 ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.