TCCA members
 | BSI Postfach 200363 Bonn 53133 Germany Tel: +4922895825523 www.bsi.bund.de Categories National Government Body National Government Body |
 | BT 1 Braham Street London E1 8EE United Kingdom https://business.bt.com/ Categories Operator Integrator BT supports around 1.2 million businesses and public sector organisations and over 32 million consumer customers. Defence, central government, emergency services, the NHS, critical power and water agencies, all depend on BT. Every year BT handles over 39 million 999/112 emergency calls before passing on to the relevant service. And every day BT protects its infrastructure, networks and customers against 6,500 cyber-attacks. And, through its award winning EE mobile network, the biggest and fastest in the UK, BT provides resilient mission critical broadband communications for Britain’s Emergency Services Network (ESN). By ensuring quality-of-service, plus priority and pre-emption over other network users, emergency services and first responders can depend on the network so they can stay focused on their life-saving work. Together, BT and EE are constantly evolving networks. Simplifying legacy estate whilst rapidly building new strategic architectures and constantly innovating to ensure mission critical performance. |
 | Caltta Technologies Co., Ltd 12F, Building G2 International E-City, Nanshan, Shenzhen 518052 China Mobile: +8675586556609 www.caltta.com Categories Manufacturer Core Products Application Provider Caltta was founded in 2012 and dedicated to professional trunking. Caltta owns 800+ R&D professionals, 400+ patents for trunking technology, and the ability to serve 100+ countries and regions around the world. Caltta provides 2G/3G/4G/5G wireless trunking products and custom-oriented end-to-end solutions. |
 | Capgemini 40 Holborn Viaduct London EC1N 2PB United Kingdom Tel: 33 6 98 93 62 10 https://www.capgemini.com/ Categories Consultant Integrator |
 | Cellnex Telecom S.A. Passeig Zona Franca, 105 BARCELONA 08038 Spain Categories Integrator, Operator |
 | Centre de Telecomunicacions i Tecnologies de la Informació (CTTI) C. Salvador Espriu 45-51 08908 L’Hospitalet de Llobregat (Barcelona) L'Hospitalet de Llobregat 08908 Spain Mobile: +34675780555 https://ctti.gencat.cat/ca/inici/ Categories Other |
| Centre for Development of Telematics (C-DOT) C-DOT Campus Mehrauli New Delhi 110030 India Tel: 91-9958911730 www.cdot.in | |
 | Centre of Emergency Communication SINE-Sekretariatet Nimbusparken 24, 4 Frederiksberg DK-2000 Denmark Tel: [45]4515 2160 www.sikkerhedsnet.dk Categories National Government Body Administration |
 | Centrul Pentru Servicii de Radiocomunicatii 3A Poligrafiei Blvd 1st Floor Bucharest 013704 Romania Tel: +40213116850 Mobile: +40722240822 www.csr.ro Categories Integrator Test Services / Systems |
 | Combilent A/S Ryttermarken 5 Farum 3520 Denmark Mobile: +4551569205 www.combilent.com Categories Manufacturer Peripheral / Component |
 | Consort Digital Pte Ltd 30, Cecil Street, #19-08, Prudential Tower, Singapore 049712 Singapore Tel: +91 99718 71816 www.consortdigital.com |
 | CritCom Association for Critical Communications 1107 Budapest Száva utca 3 Hungary Tel: +36309304909 https://critcom.hu/ Categories Non-profit organisation |