The "DDC (Digital Data Communications)" working group is charged with the setup and management of the associations active and passive Networks. The networks include local networks (wired and wireless) as well as the regional and national interconnection of networks. Essential areas of activity of the working groups are HamNet, AMPR and 44net.

Computer Emergency Response Team

Postal Address

Computer Emergency Response Team
Luxembourg Amateur Radio Union A.s.b.l.
Post Office Box 85
9286 Diekirch
Grand-Duchy of Luxembourg


+352 4975 1 911
+883 5100 0120 1 911


cert <at> laru <dot> lu

Secure VoIP and Chat server

The DDC WG has setup a secure VoIP and chat server open to all LARU members. The server makes use of RFC 7081 "CUSAX" and provides automatic configuration provisioning for the Jitsi Softphone.

Interested operator may contact the DDC Manager in case you didn't receive your access credentials yet.

Auto-Provisioning of Jitsi must be initialised before first usage. Start Jitsi and go to Preferences --> Advanced --> Provisioning, enable check box to enable provisioning and select manually specify a provisioning URI and add the following URL:${username}&pass=${password}&uuid=${uuid} 

then restart Jitsi and enter your credentials when requested.

The system is based on the protocols SIP and XMPP, as such other applications beside Jitsi will work just fine as well.

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