ULISES V5000i VoIP Communications System


The ULISES V5000i is a VCS designed according to EUROCAE, ED136, ED137 standards providing access to G/A and G/G communications for air traffic controllers in all ATM areas.

It is the 5th Generation of a product that has been on the market for almost 40 years.

Núcleo, with a market share of over 84% of Spanish airports and a satisfactory experience on three continents, has an established and repeatedly proven track record.

Efficient investment cost solution:

  • Redundancy of radio sets (M+N) for a single frequency: through intelligent management, the system achieves redundancy without the need for duplication of system elements.
  • COTS: intensive use of elements and platforms in the system.
  • Tailor-made configuration: can be implemented anywhere, from small airports or centres to the highest capacity centres, allowing economically efficient investment in each case.
  • Flexible architecture, meaning that the transition occurs without impacting the user.
  • In-house development of dedicated interface boards: these achieve reduced processing times and allow for better repair, maintenance and life cycle management.
  • Guaranteed support for a 10-year period.

Outstanding performance:

  • Latency, delay and voice quality: performance above specifications set by Eurocae standards.
  • Availability: extremely high ULISES V 5000i availability (99.999%) with hardware redundancy and hot-pluggable mechanisms.

– The redundant Ethernet network with a virtual IP guarantees increased availability.

– With decentralised switching, the system has a fail-safe architecture, providing equipment with no single point of failure that could cause the system to go down.

  • Best Signal Selection and CLIMAX for radios distributed in different sites.
  • Interoperability: it supports any system based on EUROCAE standards and allows the transmission and reception of IP telephony and radio or legacy.


  • Recording and replay: built into the position, it records the most recent radio conversation.
  • Efficient management and maintenance: locally or remotely through the user-friendly and intuitive graphical user interface.

– Application of the SNMP protocol for maintenance.

  • User-friendly operator position: including telephone, radio and direct-line panels, the operator interface (HMI) allows highly efficient operation and simple personalisation.
  • Automatic Measurement System (ETM): real-time monitoring of audio quality and key parameters.

Functional characteristics:

  • Standards: ED136, ED137B y ED138; SWAL4
  • Availability: 99.999%, with unit hot swapping, PTT/SQH.
  • Radio Interfaces: ED137 (VoIP), 4-wire (E&M, contact and in-band), E1 CAS.
  • Telephony Interfaces: 2W (wires) or 4W with in-band and out-of-band signalling:

LB, CB, FXS/FXO, ATS-R2, ATS-N5. LCEN (hot line) protocol.

ED137 (VoIP).

  • Recording interfaces: Analogue, VoIP and local in the CWP (Controller Working Position).
  • Management System: Local or remote management and reconfiguration, and supervision of hardware elements. Maintenance and operations log.

SNMP protocol configuration.

  • Voice codecs: ITU-G711 Law A.