VCX IP - Voice-over-IP ATC Radio Network

Designed for safety- and mission-critical communication

The Frequentis VCX-IP gateway is synonymous with a new era of operational voice communication in safety- and mission-critical systems.

The Frequentis VCX IP gateways combine the high reliability of embedded systems with advanced VoIP capabilities. Additionally, the Frequentis VCX VoIP gateways offer features to enhance your operational systems in terms of safety, efficiency and interoperability. The Frequentis VCX-IP gateway connects legacy systems used in civil air traffic management (ATM), air defense and maritime communication applications and therefore supports a smooth and safe migration scenario for safety-critical network solutions.

Many years of experience in providing air traffic management solutions have given Frequentis a thorough understanding of the specific needs of ATM service providers:

  • Frequentis VCX-IP gateways are designed for minimum latency and maximum quality of service. They therefore fulfill the requirements for safe transmission of an operational Voice over IP backbone.
  • The Frequentis VCX-IP gateways allow interconnection of legacy ATS interfaces over Ethernet/IP-based backbones while maintaining reliable and stable operation of the ATS protocol stacks.
  • The Frequentis VCX-IP inter-gateway communication is based on standard protocols (the Real-time Transport Protocol [RTP] for audio and the Session Initiation Protocol [SIP] for signaling), and follows the specifications of EUROCAE Working Group 67 (Voice over IP for Air Traffic Management).

The main applications of the Frequentis VCX-IP gateway family are:

  • Integrated operational voice and data service networks for air traffic management, defense and maritime applications
  • Multi-protocol gateways
  • Backup systems
  • Implementation of contingency/business resumption concepts


Redundant power supplies and cooling/processor resources guarantee maximum availability of the VCX-IP gateway. Connectivity to two separate IP-backbone networks is supported by fast switchover of the communication links. All interface boards are hot-swappable. Migration of safety critical networks needs to be planned very delicately, in order to maintain the availability of all services.

The VCX-IP gateway supports all different migration scenarios with its fully flexible deployment of different interfaces and protocols within the gateway.

Select Country
Afghanistan Åland Islands Albania Algeria American Samoa Andorra Angola Anguilla Antarctica Antigua and Barbuda Argentina Armenia Aruba Australia Austria Azerbaijan Bahrain Bangladesh Barbados Belarus Belgium Belize Benin Bermuda Bhutan Bolivia Bonaire, Saint Eustatius and Saba Bosnia and Herzegovina Botswana Bouvet Island Brazil British Indian Ocean Territory British Virgin Islands Brunei Bulgaria Burkina Faso Burundi Cambodia Cameroon Canada Cape Verde Cayman Islands Central African Republic Chad Chile China Christmas Island Cocos (Keeling) Islands Colombia Comoros Congo Congo-Brazzaville Cook Islands Costa Rica Côte d’Ivoire Croatia Cuba Curaçao Cyprus Czech Republic Denmark Djibouti Dominica Dominican Republic Ecuador Egypt El Salvador Equatorial Guinea Eritrea Estonia Ethiopia Falkland Islands Faroes Fiji Finland France French Guiana French Polynesia French Southern Territories Gabon Gambia Georgia Germany Ghana Gibraltar Greece Greenland Grenada Guadeloupe Guam Guatemala Guernsey Guinea Guinea-Bissau Guyana Haiti Heard Island and McDonald Islands Honduras Hong Kong SAR of China Hungary Iceland India Indonesia Iran Iraq Ireland Isle of Man Israel Italy Jamaica Japan Jersey Jordan Kazakhstan Kenya Kiribati Kuwait Kyrgyzstan Laos Latvia Lebanon Lesotho Liberia Libya Liechtenstein Lithuania Luxembourg Macao SAR of China Macedonia Madagascar Malawi Malaysia Maldives Mali Malta Marshall Islands Martinique Mauritania Mauritius Mayotte Mexico Micronesia Moldova Monaco Mongolia Montenegro Montserrat Morocco Mozambique Myanmar Namibia Nauru Nepal Netherlands Netherlands Antilles New Caledonia New Zealand Nicaragua Niger Nigeria Niue Norfolk Island North Korea Northern Marianas Norway Oman Pakistan Palau Palestine Panama Papua New Guinea Paraguay Peru Philippines Pitcairn Islands Poland Portugal Puerto Rico Qatar Reunion Romania Russia Rwanda Saint Barthélemy Saint Helena, Ascension and Tristan da Cunha Saint Kitts and Nevis Saint Lucia Saint Martin Saint Pierre and Miquelon Saint Vincent and the Grenadines Samoa San Marino São Tomé e Príncipe Saudi Arabia Senegal Serbia Serbia and Montenegro Seychelles Sierra Leone Singapore Sint Maarten Slovakia Slovenia Solomon Islands Somalia South Africa South Georgia and the South Sandwich Islands South Korea South Sudan Spain Sri Lanka Sudan Suriname Svalbard Swaziland Sweden Switzerland Syria Taiwan Tajikistan Tanzania Thailand The Bahamas Timor-Leste Togo Tokelau Tonga Trinidad and Tobago Tunisia Turkey Turkmenistan Turks and Caicos Islands Tuvalu Uganda Ukraine United Arab Emirates United Kingdom United States of America United States Minor Outlying Islands Uruguay US Virgin Islands Uzbekistan Vanuatu Vatican City Venezuela Vietnam Wallis and Futuna Western Sahara Yemen Zambia Zimbabwe