ISO/IEC 8481:1996 PDF

Name: ISO/IEC 8481:1996 — Information technology — Telecommunications and information exchange between systems — DTE to DTE direct connections
SKU: ISO/IEC 8481:1996
Price: 25 EUR
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Information technology — Telecommunications and information exchange between systems — DTE to DTE direct connections

Название (английский):

ISO/IEC 8481:1996

Information technology — Telecommunications and information exchange between systems — DTE to DTE direct connections

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 8
Дата публикации:: 6 июня 1996 г.
Издание:: ISO/IEC IS 8481 edition 1 version 1
ICS:: 35.100.10

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Описание (английский):

Describes an arrangement for interconnection of data terminal Equipment (DTE), without intermediate Data Circuit-terminating Equipment (DCE), in terms of electrical, mechanical and functional characteristics. Applies to DTEs with interface circuits standardised in CCITT-Rec. X.24 for transmission over public data networks (PDN). Replaces the first edition.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO/IEC 8481:1996 specifies requirements for DTE to DTE direct connections - interconnecting Data Terminal Equipment (DTE) point-to-point without intermediate Data Circuit-terminating Equipment (DCE). The standard defines the electrical, mechanical and functional characteristics for direct links using interfaces standardized in CCITT/ITU‑T Recommendation X.24, and references balanced electrical characteristics from ITU‑T V.11. This second edition (1996) replaces the 1986 first edition and applies primarily to DTEs intended for transmission over public data networks (PDN).

Key topics and technical requirements

Scope and configuration

Point-to-point DTE–DTE interconnection; adaptor/cable not part of either DTE.
Uses 15‑pole DTE connectors (per ISO 4903) for the normative configuration.

Electrical characteristics

Mandates ITU‑T V.11 balanced electrical parameters for data signaling rates up to 10 Mbit/s.
Annex A covers alternative electrical characteristics (V.24, V.10, V.28) for lower-speed or unbalanced applications.

Functional characteristics

Interchange circuits conform to X.24 definitions; lists required signal and control circuits.
Support for asynchronous (start‑stop) and synchronous transmission modes.

Timing and synchronization

For synchronous operation, requires signal element timing interconnection (Circuit X for DTE transmit timing and Circuit S for receive timing); describes cross‑over arrangements to avoid skew.

Mechanical/interchange cross‑over

Defines cross‑over wiring arrangements and connector mateability.

Safety and EMC

Earthing/signal‑ground guidance: advises on protective earth connection and potential differences between power systems that can affect common‑mode voltages and damage equipment.

Practical applications and users

Who uses it

Equipment manufacturers designing DTE interfaces (terminals, routers, test equipment)
System integrators and installers implementing direct serial/data links
Network engineers and test laboratories validating PDN-compatible DTE interconnections
Procurement and compliance teams referencing interface interoperability requirements

Typical use cases

Direct terminal-to-terminal links where no DCE (modem/line interface) is needed
Laboratory setups and factory floor device connections using standardized X.24/V.11 interfaces
Legacy and industrial data communications requiring deterministic timing and predefined pinouts

Related standards

ISO 4903 (15‑pole DTE/DCE connector)

ITU‑T V.11 (balanced electrical characteristics)

ITU‑T V.24, V.10, V.28 (alternative interchange circuits/electrical characteristics)

CCITT/ITU‑T X.24 (interchange circuit definitions)

ISO/IEC 11569 (26‑pole connector details)

This standard is essential for ensuring interoperable, safe, and EMC‑compliant direct DTE connections in environments that rely on X.24 and V.11 interface conventions.

ISO/IEC 8481:1996 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Practical applications and users

Related standards

Технические детали

ISO 4903:1980

Data communication — 15- pin DTE/DCE interface connector and pin assignments

BS ISO/IEC 11569:1993

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