Is it possible to open and manage EPT designs that are created with different releases than the release installed on the local workstation?

The Nokia Engineering and Planning Tool (EPT) is designed with backward compatibility. This allows a user with a current version of the EPT software to open, edit, and save network designs that were created using older releases of the tool. When an older design is opened, it is typically upgraded to the current version's format. However, the tool is not forward-compatible, meaning an older version of EPT cannot open a design that has been saved with a newer release. This is a standard software compatibility model that ensures users can migrate their work forward to new software versions.

A. This is incorrect because EPT supports backward compatibility, allowing older designs to be opened and edited.
C. This is incorrect because older designs can be fully edited and saved in the new format, not just opened in a read-only mode.
D. This is incorrect because forward compatibility is not supported; older releases cannot open designs from newer releases.

1. Nokia Optical Networking Fundamentals 4A0-205 Student Guide: This principle is a fundamental aspect of using the EPT software, which is covered in the courseware. The guide explains that EPT maintains backward compatibility to allow for the evolution of network plans across software releases. A newer EPT version can open and convert a design from an older version, but the reverse is not possible. (Reference is to the general principles taught within the official course materials for the 4A0-205 certification).

2. Nokia 1830 PSS Engineering and Planning Tool (EPT) User Guide (any recent release, e.g., R21.10): In sections typically titled "Opening a Design" or "Version Compatibility," the documentation explicitly states that designs created with previous versions can be opened and will be converted to the current version's format. It also warns that once a design is saved in the new format, it cannot be opened by an older EPT version. This confirms full backward compatibility for editing but no forward compatibility.