ISO 2110:1989

ISO 2110:1989 defines the 25-pole DTE/DCE interface connector and contact number assignments for data communication equipment. For engineering teams, procurement groups, and compliance reviewers, it provides a clear reference for connector identity and pin assignment consistency, which supports documented evaluation and technical validation. ISO 2110:1989 is especially relevant when interface compatibility, installation accuracy, or replacement part selection must be checked against a recognized engineering specification.

What is ISO 2110:1989?

ISO 2110:1989 is a technical document focused on the physical interface between data terminal equipment and data circuit-terminating equipment using a 25-pole connector arrangement. Its main purpose is to define contact number assignments so that the connector interface can be applied consistently across equipment and documentation. In practice, it helps support conformity assessment, technical review, and operational consistency where standardized data communication interfaces are part of the system design.

Applications of ISO 2110:1989

This reference is commonly used in data communication equipment development, interface documentation, laboratory evaluation, and procurement checks for connector compatibility. It may support engineering documentation for systems that rely on a 25-pole DTE/DCE interface, especially when teams need to verify connector mapping during testing workflows or integration work. It is also useful in quality workflows where a known contact assignment is needed to reduce errors in assembly, maintenance, or replacement planning.

Why is ISO 2110:1989 important?

Standardized connector and contact assignments help reduce interface mistakes, improve interoperability, and support repeatable verification activities. That matters during compliance workflows, technical assessment, and product evaluation because interface errors can affect system performance, troubleshooting, and installation reliability. ISO 2110:1989 also supports procurement and conformity assessment preparation by giving buyers and engineers a common technical reference for checking whether equipment documentation and hardware match expected connection requirements.

• Defines the 25-pole DTE/DCE connector interface in a form suitable for engineering documentation.
• Supports connector mapping checks during laboratory testing and integration reviews.
• Helps procurement and maintenance teams verify interface compatibility before deployment.
• Provides a stable reference for conformity assessment and technical validation activities.