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Knowledge Base & Operational DocumentationHow to Provision a Replacement VoIP Phone Without Losing Its Extension
A new VoIP handset may power on but fail to register or appear under the wrong extension. Provisioning often depends on a device identifier, account assignment, firmware, voice network, and a provisioning server. Reusing an old phone configuration without confirming ownership can leave the wrong device attached to an extension.
Prepare the device record
Confirm the handset model, MAC address, intended user, extension, and approved firmware. Check that DHCP, DNS, time, and provisioning access work on the voice network. Remove or retire the old device record only after its replacement path is clear.
- Use the organization's approved provisioning method.
- Confirm emergency location and caller ID settings where applicable.
- Test inbound, outbound, internal, hold, and transfer behavior.
- Record the handset asset and extension owner.
Informatix Systems lists VoIP and business communications services. A review can help standardize device and extension provisioning. Contact Informatix Systems if phone replacements cause registration issues.