UDR
November 28, 2025 ยท View on GitHub
UDR
Implements 3gpp 29.504 specification. Provides service to PCF, UDM. UDR supports SBI interface and any other network function can use the service.
UDR flow diagram

Dynamic Network configuration (via webconsole)
UDR polls the webconsole every 5 seconds to fetch the latest PLMN configuration.
Setting Up Polling
Include the webuiUri of the webconsole in the configuration file
configuration:
...
webuiUri: https://webui:5001 # or http://webui:5001
...
The scheme (http:// or https://) must be explicitly specified. If no parameter is specified,
UDR will use http://webui:5001 by default.
HTTPS Support
If the webconsole is served over HTTPS and uses a custom or self-signed certificate, you must install the root CA certificate into the trust store of the UDR environment.
Check the official guide for installing root CA certificates on Ubuntu: Install a Root CA Certificate in the Trust Store
Upcoming changes
- Subscription management callbacks to network functions.
Compliance of the 5G Network functions can be found at 5G Compliance
Reach out to us through
- #sdcore-dev channel in ONF Community Slack
- Raise Github issues