User Manual Q&AAnswer
Nov 16, 2025 - 01:20 PM
If you are experiencing registration issues with your Extron DMP Plus Series VoIP device when connecting it to the Interactive Intelligence PBX system, here are some troubleshooting steps you can follow based on the provided manual:
1. **Network Configuration:**
- Ensure that the DMP Plus Series is connected to the correct LAN port for VoIP traffic (LAN 1 is recommended).
- Verify that the DMP Plus Series can ping the VoIP server using proxy ping to check network access and DNS name resolution.
2. **Check Credentials:**
- Confirm that the credentials entered in the Interactive Intelligence setup match the registration fields for each line on the DMP Plus Series.
3. **Network Interface Settings:**
- Review the network interface settings on the DMP Plus Series, including DNS fields, especially if a proxy domain name is used instead of an IP address.
4. **TLS Usage:**
- If TLS is used, remember that only Line 1 can be used on the DMP Plus VoIP Interface.
5. **SIP Transactions:**
- Check the Logs tab on the DMP Plus Series for inbound and outbound SIP transactions. Absence of inbound transactions could indicate a network routing issue, while specific SIP responses like 403 – Forbidden may indicate registration problems.
By following these troubleshooting steps and ensuring proper network connectivity, credentials, and configuration settings, you should be able to address registration issues with your DMP Plus Series VoIP device when connecting it to the Interactive Intelligence PBX system.
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