Overview
ISO/IEC 13575:1995 is an international standard that specifies the dimensions and contact number assignments for a 50-pole interface connector used in telecommunications and information exchange between systems. This standard covers the mateability dimensions and contact arrangements for the interface between Data Terminal Equipment (DTE) and Data Circuit-Terminating Equipment (DCE). It applies where the interface’s functional characteristics conform to CCITT Recommendation V.24 and the electrical characteristics conform to ITU-T Recommendation V.12.
Developed by the ISO/IEC Joint Technical Committee (JTC 1) Subcommittee SC 6, this standard enables mechanical and electrical compatibility to ensure consistent, reliable connections in data communication systems. It supports balanced data signaling interfaces with rates up to 52 Mb/s.
Key Topics
- 50-Pole Connector Specification: Defines precise mechanical dimensions for the male (cable) and female (equipment) connectors, ensuring correct mateability and secure latching mechanisms.
- Contact Number Assignment: Detailed numbering of contacts facilitates standardized wiring assignments, including signal ground, transmitted data, received data, and control signals.
- Interface Compliance: Matches CCITT V.24 functional recommendations and ITU-T V.12 electrical standards for balanced interchange circuits.
- Shielding: Emphasizes use of shielded connectors to reduce electromagnetic interference, supporting high-quality signal transmission.
- Intermateability: Ensures connectors across different manufacturers fit and operate interchangeably without loss of performance.
- Connector Dimensions: Provides measurements in both millimeters and inches for global applicability and ease of manufacturing.
Applications
- Telecommunications Systems: Standardized 50-pole connectors are critical for reliable data terminal-to-data circuit equipment connections in telecom networks.
- Data Communication Interfaces: Supports data exchange equipment requiring balanced data signaling and proper signal timing coordination.
- Networking Hardware: Used in interface cabling for routers, modems, and terminal adapters compliant with ITU-T V.24 and V.12.
- Industrial and Commercial Equipment: Facilitates uniform, repeatable connection methods between diverse information systems and communication devices.
- Cross-Manufacturer Compatibility: Enables interoperability between equipment produced by various vendors, simplifying installation and maintenance.
Related Standards
- CCITT Recommendation V.24 (1988): Defines functional characteristics for interchange circuits between data terminal and data circuit-terminating equipment.
- ITU-T Recommendation V.12 (1995): Specifies electrical characteristics of balanced data signaling circuits with data rates up to 52 Mb/s.
- ITU-T Recommendation V.130 (1995): Provides framework for ISDN terminal adapters, pertinent for integrated communication setups.
- IEC 48B (1993): Details physical specifications for a range of shielded connectors with trapezoidal shells, complementary to connector housing design.
Keywords: ISO/IEC 13575, 50-pole connector, telecommunications interface, DTE-DCE interface, connector dimensions, contact number assignment, CCITT V.24, ITU-T V.12, shielded connector, data transmission standards, balanced interchange circuit, electrical signaling standards, telecommunication hardware, connector mateability, multi-contact connector