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X.25 [17 records]

Record 1 2017-04-06

English

Subject field(s)
  • Information Processing (Informatics)
  • Internet and Telematics
DEF

An international standard defining packet-switched communication protocols for a public or private network. The recommendation is prepared by the Comité Consultatif International Télégraphique et Téléphonique(CCITT). Along with other CCITT recommendations, the X. 25 Recommendation defines the physical-, data-link-, and network-layer protocols necessary to interface with X. 25 networks.

OBS

The CCITT X. 25 Recommendation is supported by most X. 25 equipment vendors, but a new CCITT X. 25 Recommendation is published every four years.

French

Domaine(s)
  • Traitement de l'information (Informatique)
  • Internet et télématique
DEF

Protocole du niveau 3 OSI. Est au cœur des réseaux à commutation de paquets, parmi lesquels Transpac. Les cartes passerelles X.25 installées dans un réseau local permettent de router simultanément des flots de données provenant de PC en émulation 3270, Questar de Bull et Videotex, vers les mainframes et services externes correspondants.

OBS

CCITT : Comité Consultatif International Télégraphique et Téléphonique.

Spanish

Save record 1

Record 2 2012-01-24

English

Subject field(s)
  • Computer Hardware
CONT

The protocol converter provides the capability to interface either asynchronous or synchronous terminal input to any X. 25 network.

French

Domaine(s)
  • Matériel informatique
DEF

Interface qui rend compatibles les données transmises avec des protocoles d'échange différents.

Spanish

Campo(s) temático(s)
  • Equipo físico de computadora (Hardware)
DEF

Dispositivo para traducir los códigos de transmisión de datos y/o el protocolo de una red o dispositivo al código o protocolo correspondientes a otra red o dispositivo; permitiendo la comunicación entre equipos con diferentes convenciones.

Save record 2

Record 3 2008-09-05

English

Subject field(s)
  • System Names
  • Internet and Telematics
OBS

Tymnet was an international data communications network headquartered in San Jose, California that utilized virtual call packet switched technology and used X. 25, SNA/SDLC, ASCII and BSC interfaces to connect host computers(cervers) at thousands of large companies, educational institutions, and government agencies. Users typically connected via dial-up connections or dedicated async connections. The business consisted of a large public network that supported dial-up users and a private network that allowed government agencies and large companies(mostly banks and airlines) to build their own dedicated networks. The private networks were often connected via gateways to the public network to reach locations not on the private network.

French

Domaine(s)
  • Noms de systèmes
  • Internet et télématique

Spanish

Save record 3

Record 4 2001-02-22

English

Subject field(s)
  • Telecommunications
OBS

A type of virtual circuit set up within an X. 25 network.

French

Domaine(s)
  • Télécommunications

Spanish

Save record 4

Record 5 1999-09-14

English

Subject field(s)
  • Federal Government Bodies and Committees (Canadian)
OBS

Public Works and Government Services Canada. Government Telecommunications and Informatics Services. GPN is a shared, pay-as-you-use, packet switched, digital-data-only-network-based on the X. 25 network access protocol

French

Domaine(s)
  • Organismes et comités fédéraux (Gouvernement canadien)
OBS

Travaux publics et Services gouvernementaux Canada. Services gouvernementaux de télécommunications et d'informatique. Le RGTP est un réseau partagé à facturation selon l'usage de transmission des données numériques à commutation par paquets basé sur le protocole d'accès réseau X.25

Spanish

Save record 5

Record 6 1998-11-30

English

Subject field(s)
  • System Names
  • Internet and Telematics
OBS

The French PTT's public packet network. It started operation in 1978 after testbed development of the RCP networks. Transpac provides an X. 25 interface.

French

Domaine(s)
  • Noms de systèmes
  • Internet et télématique
OBS

Réseau à commutation par paquets créé en 1978 en France.

Spanish

Save record 6

Record 7 1998-11-26

English

Subject field(s)
  • System Names
  • Internet and Telematics
OBS

The public network of the UK's PTT, British Telecom. This network uses the X. 25 interface protocol.

French

Domaine(s)
  • Noms de systèmes
  • Internet et télématique
OBS

Nom du réseau à commutation de paquets utilisé en Grande-Bretagne.

Spanish

Save record 7

Record 8 1996-08-26

English

Subject field(s)
  • Internet and Telematics
  • Electrical Engineering
  • Telecommunications Switching
  • Photoelectricity and Electron Optics
DEF

A variation on X. 25 packet-switching protocol in which data is bundled into equal-size cells.

OBS

fast packet-switching

French

Domaine(s)
  • Internet et télématique
  • Électrotechnique
  • Commutation (Télécommunications)
  • Photo-électricité et optique électronique
DEF

Technique de transmission dans laquelle on divise le message à transmettre en petits fragments de longueur fixe (cellules). Elle sous-tend les réseaux ATM.

Spanish

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Record 9 1994-01-27

English

Subject field(s)
  • Information Processing (Informatics)
  • Internet and Telematics
DEF

A block of data carrying addressing and other information that is needed to establish an X. 25 switched virtual circuit(SVC).

French

Domaine(s)
  • Traitement de l'information (Informatique)
  • Internet et télématique
DEF

Bloc de données comportant des informations d'adressage pour établir une liaison X.25 de type circuit virtuel commuté (SVC).

Spanish

Save record 9

Record 10 1994-01-13

English

Subject field(s)
  • Information Processing (Informatics)
  • Internet and Telematics
DEF

A protocol for the transfer of packets between an X. 25 DTE and an X. 25 DCE. X. 25 PAP is a full-duplex protocol that supports data sequencing, flow control, accountability, and error detection and recovery.

French

Domaine(s)
  • Traitement de l'information (Informatique)
  • Internet et télématique
DEF

Un protocole destiné au transfert de paquets entre un DTE X.25 et un DCE X.25. Le PAP X.25 est un protocole full-duplex qui supporte le séquencement des données, le contrôle de flot, la comptabilité, ainsi que la détection des erreurs et leur reprise.

Spanish

Save record 10

Record 11 1994-01-13

English

Subject field(s)
  • Information Processing (Informatics)
  • Internet and Telematics
DEF

A block of data that notifies X. 25 DTEs that an irrecoverable error exists within the X. 25 network. Restart packets clear all existing SVCs and resynchronize all existing PVCs between an X. 25 DTE and X. 25 DCE.

French

Domaine(s)
  • Traitement de l'information (Informatique)
  • Internet et télématique
DEF

Un bloc de donnés qui indique à un DTE X.25 qu'une erreur irrécupérable est intervenue sur le réseau. Le paquet de redémarrage remet à 0 tous les SVC et resynchronise tous les PVC existants entre un DTE X.25 et un DCE X.25.

Spanish

Save record 11

Record 12 1989-05-01

English

Subject field(s)
  • Internet and Telematics
DEF

Network that uses X. 25 communications protocols.

French

Domaine(s)
  • Internet et télématique

Spanish

Save record 12

Record 13 1989-05-01

English

Subject field(s)
  • Informatics
  • Telecommunications Facilities
OBS

Network that uses X. 25 communications protocols(Prentice-Hall Standard Glossary of Computer Terminology, 1985, p. 485).

French

Domaine(s)
  • Informatique
  • Installations de télécommunications
OBS

"Téléinformatique" Macchi, CJ., Guilbert, J.-F., pp. 87, 349, 361, 548, 840, 1987).

Spanish

Save record 13

Record 14 1985-05-01

English

Subject field(s)
  • Computer Programs and Programming
OBS

Tekelec announces the production of a new software for its TE 92 traffic analyser-simulator : SITREX 25, a simulation language with the same structure as BASIC but using the mnemonics of the X. 25 protocol, can be readily assimilated by any teleprocessing engineer.

OBS

traffic analysis: The obtaining of information from a study of communications traffic. Includes statistical study of message headings, receipts, acknowledgements, routing, and so on, plus a tabulation of volumes and types of messages with respect to time.

French

Domaine(s)
  • Programmes et programmation (Informatique)
OBS

Tekelec annonce la disponibilité d'un nouveau logiciel pour son analyseur-simulateur de trafic TE 92, le SITREX 25 qui est un langage de simulation ayant la structure du BASIC, mais utilisant la mnémonique du protocole X.25. Il est donc immédiatement assimilable par tout technicien de la téléinformatique.

Spanish

Save record 14

Record 15 1985-01-22

English

Subject field(s)
  • Internet and Telematics
CONT

Memotec was founded shortly after the adoption of the CCITT X. 25 packet switching protocol as an international standard.

French

Domaine(s)
  • Internet et télématique

Spanish

Save record 15

Record 16 1984-05-25

English

Subject field(s)
  • Office Machinery
CONT

The Interview 3600 Protocol Analyzer and Selective Data Recorder and the Interview 4600 Protocol Analyzer and Interactive Test System feature both an easy to use X. 25 menu-driven capability.

French

Domaine(s)
  • Mécanographie

Spanish

Save record 16

Record 17 1984-04-24

English

Subject field(s)
  • Computer Programs and Programming
CONT

The Interview 3600 Protocol Analyzer and Selective Data Recorder and the Interview 4600 Protocol Analyzer and Interactive Test System feature both an easy to use X. 25 menu-driven capability.

French

Domaine(s)
  • Programmes et programmation (Informatique)
CONT

L'analyseur de protocole Interview Comstate II fournit à présent un support (en option) pour le développement et la documentation de produits et d'applications aux normes X21.

Spanish

Save record 17

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