Project 25 (original) (raw)
APCO P25 (Kurzform von Project 25 von ) ist eine Übertragungsnorm, die im Regierungsauftrag für die Sicherheitsbehörden in Nordamerika entwickelt wurde und ähnliche Anforderungen wie das ETSI-TETRA in Europa erfüllt.
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| dbo:abstract | APCO P25 (Kurzform von Project 25 von ) ist eine Übertragungsnorm, die im Regierungsauftrag für die Sicherheitsbehörden in Nordamerika entwickelt wurde und ähnliche Anforderungen wie das ETSI-TETRA in Europa erfüllt. (de) P25 es la abreviatura de Project 25 y APCO-25, se trata de un estándar de comunicaciones digitales por radio. Esta tecnología es un estándar de TIA (Telecommunications Industry Association) y está apoyada por APCO (Association of Public-Safety Communications Officials-International). Es ampliamente usada en Estados Unidos y Canadá, sería un equivalente al estándar europeo TETRA. Actualmente se está pasando de la Fase 1 a la Fase 2 del estándar para conseguir un mayor aprovechamiento del espectro radioeléctrico. Además de exigir simulcast en las nuevas concesiones de frecuencias. (es) Project 25 (P25 or APCO-25) is a suite of standards for interoperable digital two-way radio products. P25 was developed by public safety professionals in North America and has gained acceptance for public safety, security, public service, and commercial applications worldwide. P25 radios are a direct replacement for analog UHF (typically FM) radios, but add the ability to transfer data as well as voice, allowing for more natural implementations of encryption and text messaging. P25 radios are commonly implemented by dispatch organizations, such as police, fire, ambulance and emergency rescue service, using vehicle-mounted radios combined with repeaters and handheld walkie-talkie use. Starting around 2012, products became available with the newer phase 2 modulation protocol, the older protocol known as P25 became P25 phase 1. P25 phase 2 products use the more advanced AMBE2+ vocoder, which allows audio to pass through a more compressed bitstream and provides two TDMA voice channels in the same RF bandwidth (12.5 kHz), while phase 1 can provide only one voice channel. The two protocols are not compatible. However, P25 Phase 2 infrastructure can provide a "dynamic transcoder" feature that translates between Phase 1 and Phase 2 as needed. In addition to this, phase 2 radios are backwards compatible with phase 1 modulation and analog FM modulation, per the standard. The European Union has created the Terrestrial Trunked Radio (TETRA) and Digital mobile radio (DMR) protocol standards, which fill a similar role to Project 25. (en) Project 25 (P25) ou APCO-25 désigne un ensemble de normes de télécommunications pour les radio numériques en usage parmi les personnels de sécurité en Amérique du Nord, que ce soit des policiers ou des pompiers. Utilisé aux niveaux fédéral, provincial (au Canada), de l'État (aux États-Unis) et municipal, il permet aux personnels de communiquer avec tout professionnel dans le cas d'urgence ou d'une demande d'aide. Il ressemble beaucoup au système européen TETRA. (fr) Project 25 (P25) o APCO-25 definiscono una serie di standard per la comunicazione radio digitale, progettati per l'utilizzo da parte da enti federali, statali e le agenzie locali di polizia nel Nordamerica, in modo da permettere l'interoperabilità fra i vari enti e la mutua coordinazione in caso di emergenze.Il sistema è simile per gli scopi al TETRA utilizzato in Europa, ma non è compatibile con esso.Rispetto al TETRA, le radio possono comunicare in FM con le radio più vecchie, oppure possono comunicare in modalità sia digitale che FM con altre radio P25. (it) APCO P25 (Project 25) представляет собой набор стандартов, разработанных совместными усилиями Ассоциации средств связи и общественной безопасности , Национальной телекоммуникационной ассоциации , Федерального агентства национальных систем связи и Ассоциации телекоммуникационной индустрии . P25 — это система связи с открытой архитектурой, направленная на удовлетворение потребности государственных, правительственных и прочих организаций в оперативной связи для целей обеспечения безопасности. Стандарт Р25 определяет интерфейсы, взаимодействие и возможности любой системы, совместимой с стандартом Р25. Р25-радиостанция может работать как в аналоговом режиме для совместимости с существующими аналоговыми FM радиостанциями, так и в аналоговом или цифровом режиме с другими Р25 радиостанциями. Р25 стандарт не является закрытым, поэтому любой производитель может создавать свои цифровые Р25 радиостанции. (ru) Project 25(亦作P25或APCO-25) 是为北美公共安全组织所设计的一套数字移动无线电标准。 P25电台是为模拟（例如FM）无线电设备设计的直接替代产品，并且在话音传输的基础上增加了数据传输的功能，能够更原生地进行信息传输以及数据加密。 P25电台通常部署于派遣组织，例如警察、消防、救护车以及其他紧急救援服务工作，具体实施上常为车载电台以及手持对讲机一齐使用。 从2012年左右开始采用新的 Phase 2 调制协议，在此之后较早的P25协议被定为P25 Phase 1。Phase 2产品使用更为先进的AMBE2+声码器，允许压缩音频使其能通过更大的流量，并在相同RF带宽（12.5kHz）的情况下提供两个TDMA语音通道，而Phase 1标准只能提供一个语音通道。前后两种协议不能直接进行互通。但Phase 2可以提供动态转码的功能，根据需要在Phase 1和Phase 2中实现转换。除此之外，标准上Phase 2设备可以向下兼容Phase 1和模拟FM调制。欧盟也有类似于P25的TETRA（Terrestrial Trunked Radio）无线电标准。 P25协议充当着类似于TETRA或DMR协议类似的角色。 (zh) |
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| dbo:wikiPageExternalLink | http://www.apco.ca/ http://tiaonline.org/all-standards/committees/tr-8 http://www.dvsinc.com/papers/p25_training_guide.pdf http://www.project25.org/ https://valid8.com/solutions/p25-issi-cssi-conformance http://www.p25phase2.com https://web.archive.org/web/20110223005820/http:/www.apco911.org/frequency/project25.php https://web.archive.org/web/20111019223730/http:/www.tiaonline.org/standards/technology/project_25/index.cfm https://web.archive.org/web/20170611161725/http:/www.dvsinc.com/prj25.htm https://web.archive.org/web/20180514142012/http:/www.apco.ca/ |
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| rdfs:comment | APCO P25 (Kurzform von Project 25 von ) ist eine Übertragungsnorm, die im Regierungsauftrag für die Sicherheitsbehörden in Nordamerika entwickelt wurde und ähnliche Anforderungen wie das ETSI-TETRA in Europa erfüllt. (de) P25 es la abreviatura de Project 25 y APCO-25, se trata de un estándar de comunicaciones digitales por radio. Esta tecnología es un estándar de TIA (Telecommunications Industry Association) y está apoyada por APCO (Association of Public-Safety Communications Officials-International). Es ampliamente usada en Estados Unidos y Canadá, sería un equivalente al estándar europeo TETRA. Actualmente se está pasando de la Fase 1 a la Fase 2 del estándar para conseguir un mayor aprovechamiento del espectro radioeléctrico. Además de exigir simulcast en las nuevas concesiones de frecuencias. (es) Project 25 (P25) ou APCO-25 désigne un ensemble de normes de télécommunications pour les radio numériques en usage parmi les personnels de sécurité en Amérique du Nord, que ce soit des policiers ou des pompiers. Utilisé aux niveaux fédéral, provincial (au Canada), de l'État (aux États-Unis) et municipal, il permet aux personnels de communiquer avec tout professionnel dans le cas d'urgence ou d'une demande d'aide. Il ressemble beaucoup au système européen TETRA. (fr) Project 25 (P25) o APCO-25 definiscono una serie di standard per la comunicazione radio digitale, progettati per l'utilizzo da parte da enti federali, statali e le agenzie locali di polizia nel Nordamerica, in modo da permettere l'interoperabilità fra i vari enti e la mutua coordinazione in caso di emergenze.Il sistema è simile per gli scopi al TETRA utilizzato in Europa, ma non è compatibile con esso.Rispetto al TETRA, le radio possono comunicare in FM con le radio più vecchie, oppure possono comunicare in modalità sia digitale che FM con altre radio P25. (it) Project 25(亦作P25或APCO-25) 是为北美公共安全组织所设计的一套数字移动无线电标准。 P25电台是为模拟（例如FM）无线电设备设计的直接替代产品，并且在话音传输的基础上增加了数据传输的功能，能够更原生地进行信息传输以及数据加密。 P25电台通常部署于派遣组织，例如警察、消防、救护车以及其他紧急救援服务工作，具体实施上常为车载电台以及手持对讲机一齐使用。 从2012年左右开始采用新的 Phase 2 调制协议，在此之后较早的P25协议被定为P25 Phase 1。Phase 2产品使用更为先进的AMBE2+声码器，允许压缩音频使其能通过更大的流量，并在相同RF带宽（12.5kHz）的情况下提供两个TDMA语音通道，而Phase 1标准只能提供一个语音通道。前后两种协议不能直接进行互通。但Phase 2可以提供动态转码的功能，根据需要在Phase 1和Phase 2中实现转换。除此之外，标准上Phase 2设备可以向下兼容Phase 1和模拟FM调制。欧盟也有类似于P25的TETRA（Terrestrial Trunked Radio）无线电标准。 P25协议充当着类似于TETRA或DMR协议类似的角色。 (zh) Project 25 (P25 or APCO-25) is a suite of standards for interoperable digital two-way radio products. P25 was developed by public safety professionals in North America and has gained acceptance for public safety, security, public service, and commercial applications worldwide. P25 radios are a direct replacement for analog UHF (typically FM) radios, but add the ability to transfer data as well as voice, allowing for more natural implementations of encryption and text messaging. P25 radios are commonly implemented by dispatch organizations, such as police, fire, ambulance and emergency rescue service, using vehicle-mounted radios combined with repeaters and handheld walkie-talkie use. (en) APCO P25 (Project 25) представляет собой набор стандартов, разработанных совместными усилиями Ассоциации средств связи и общественной безопасности , Национальной телекоммуникационной ассоциации , Федерального агентства национальных систем связи и Ассоциации телекоммуникационной индустрии . (ru) |
| rdfs:label | APCO P25 (de) P25 (es) Project 25 (it) Project 25 (fr) Project 25 (en) APCO P25 (ru) Project 25 (zh) |
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