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20 November 2012
NRENum.net and eduCONF call for working group participation
Péter Szegedi and Rui Ribeiro at the joint eduCONF-TF-Media meeting on 16-17 Feb 2012, in Dubrovnik, Croatia.

Participation is invited in a new working group that will pave the way towards unified dialling in videoconferencing and IP telephony. Between now and March 2013 this joint working group will pilot the use of TERENA’s NRENum.net to facilitate the GN3 (GÉANT) project’s eduCONF service. To formulate the joint working group and discuss contributions, actions, milestones and deadlines, a kick-off conference call will take place on Wednesday 28 November 2012, 12.00 CET. NRENum.net and eduCONF participants are invited to join.

The working group will be jointly coordinated by the eduCONF task leader, Rui Ribeiro (FCCN), and the NRENum.net service coordinator, Péter Szegedi (TERENA). Participants from within the GN3 Consortium may reclaim expenses from the project, while those outside the project (such as RedCLARA, APAN and North American countries) are welcome to contribute to the pilot on a voluntary basis.


NRENum.net is an end-user service for academia run by NRENs (national research and education networking organisations) and coordinated by TERENA. NRENum.net uses special DNS (Domain Name System) record types to translate a telephone number into a URI (Uniform Resource Identifier) or IP (Internet Protocol) address that can be used in Internet communications. It provides a solution for seamless dialling interconnection between multiple technologies in countries where the standard system, the 'Golden ENUM Tree', using ENUM (E.164 Number mapping) technology, is unavailable, and it facilitates services such as VoIP (Voice over IP) and videoconferencing.

The GN3 project’s eduCONF task supports and facilitates the use and adoption of videoconferencing at a pan-European level across the NREN community. The eduCONF team developed 'eduCONF Direct Dialling (EDDI)' - an innovative dialling scheme that creates virtual numbers with short, non-repeated digits for centralised call routing in the videoconferencing infrastructure. Making the videoconferencing gatekeepers ENUM protocol-enabled will allow EDDI numbers to be listed in ENUM-type DNS trees such as NRENum.net so that the eduCONF system can be unified with other videoconferencing and telephony systems.

Joint working group activities

The joint working group will pilot ENUM support in the eduCONF infrastructure by populating virtual EDDI numbers in the NRENum.net tree to look up NRENum.net destinations and to allow reachability for callers from other VoIP networks or services. This may ultimately lead to a seamless transition from a centralised gatekeeper-based Global Dialling Scheme (GDS) into a distributed DNS-lookup-based ENUM addressing scheme. To complete this objective, mutual policy agreements and small technical developments are required to both the eduCONF infrastructure and the NRENum.net service.

Further plans include the issuing of a survey about the use of ENUM services and related infrastructures, the piloting of various virtual number allocation options, the drafting of the necessary technical and policy documentations, and a face-to-face hands-on workshop in early 2013 to evaluate the implementation options and conclude recommendations for the production service.

Further information

More information is available from the NRENum.net wiki and the eduCONF web pages.