TNR Contacts from NorApp is a private directory built for Morocco's National Railway Office staff, intended to speed identification of professional calls and access to internal extensions. The app matches incoming numbers against a hardcoded professional numbering plan, integrates with device calling functions, and keeps a searchable extension list and call history for operational tracking. Designed for drivers, station managers, technicians, and administrative teams, it targets frontline personnel who need dependable access to colleague contacts during field operations.

How does it identify internal service calls?

The app uses a pre-loaded ONCF numbering plan to compare incoming numbers and flag professional service calls in real time. Internal caller identification matches digits to the hardcoded numbering structure and displays the result via the device dialer. Key technical elements include:

• Hardcoded numbering plan stored locally
• Integration with device calling APIs for on-ring display
• Local matching to avoid external lookups

Does it remain usable in low-signal field conditions?

The directory is stored on the device, so lookup and search operations work without network access. That offline database supports field operations where connectivity is poor, and compatibility with standard Android devices (requiring Android 5.0 or higher) allows installation on both modern and legacy field units. The pared-down interface keeps retrieval fast on devices that are often in transit along rail corridors.

Is it safe to run on production railway devices?

The app requires permissions to manage calls and access contact data, which are necessary for its identification and quick-dial functions. Because contact data remains local and the tool is intended exclusively for ONCF employees, external exposure is reduced. Administrators should account for those permissions in device provisioning and follow internal policies when approving apps for operational handsets.

Can non-technical staff use it without risk?

The interface is primarily in French and intentionally pared down to limit distractions for frontline personnel. Search by department or role and single-tap quick-dial connect directly to the device dialer, while a service call history records recent professional communications for follow-up. Basic tasks complete with minimal training, though administrators should confirm language suitability for teams with other language needs.

Practical choice for ONCF operations with a narrow scope

The app serves ONCF frontline teams that require a focused professional directory; its scope is intentionally narrow and tailored to internal workflows, so it has limited value outside the organisation. For deployments, integrate installation into standard device provisioning and schedule updates when units have reliable connectivity. Use internal rollout controls to limit access to authorised employees. Recommended for operational staff who need predictable, organisation-specific contact tools.