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Knowledge Base & Operational DocumentationWhy Does a VoIP Phone Keep Showing an Old Caller Name?
A phone can show a stale caller name even when the number is correct. The display may come from a local contact, directory cache, carrier lookup, or caller ID record that updates separately from the phone system.
What to check
Compare the incoming number and displayed name across the handset, desktop app, and call log. Check local contacts, company directory synchronization, caller ID configuration, and the provider’s update status. Test with a controlled call and note whether internal and external callers behave differently.
Recommended next step
Correct the authoritative directory or caller ID source and allow its documented sync cycle. Clear device caches only after confirming the source data, then verify the display on each supported endpoint.
How Informatix Systems can help
Informatix Systems provides VoIP and business communications services. We can review the affected systems and workflow, help identify likely causes, and outline a practical implementation path. Contact us with the platform involved, when the issue began, and non-sensitive error details.