been installed on their locations by Marconi Electronic Systems UK, (from 1968 part of General Electric Company), in 1961 the ACE-High system had officially been transferred to NATO. In 1966 however France, under president Charles de Gaulle, left NATO and systems had to be rerouted from France to Brunssum, Netherlands while the former Primary Control Center at Beauvais, was relocated to Lamersdorf, West-Germany. In the early 1970s, the first geostationary satellites in the "Satellite Communication" network (SATCOM) had been activated thus expanding the ACE-High system. The rise of the military SATCOM I-III (1971-1994), SATCOM IV (1995-now) network satellites, Internet routers, and the Central Region Integrated Communication System (CRICS) and the Crisis Response Operations in NATO Operating Systems (CRONOS) made ACE High obsolete. By the end of the 1980s, its replacement was already available but NATO postponed the ACE High phasing-out until 1995. In 1995, the first British NATO SATCOM IV/B satellites had been activated and because the ACE-High frequencies had to be released for civil TV and mobile phone usage NATO decided to deactivate ACE-High in 1996, and the 800 MHz band frequencies became available for civilian use again. ACE High sites The ACE High network included the following major sites and terminals, but also connected Line of Sight (LOS) microwave links to other networks reaching C2 centres not listed here. AFNORTH-Norway (NC- Senja) > NSEZ Pos TX RX Equipment:1 Scatter Line + 2 Radio Line (nca - Höggumpen) > NHGZ Pos 502 m TX RX Equipment:1 Radio Line (ND- Bodö) > NKLZ Pos 801 m TX RX Equipment:2 Scatter Line + 1 Radio Line (nda - Bodoe Tail - Kletkov) > NVAZ Pos unbekannt TX RX Equipment:1 Radio Line (NE - Mosjöen) > NMOZ Pos 627 m TX RX Equipment:2 Scatter Line (NF - Trondheim) > NSBZ Pos 677 m AMSL TX RX Equipment:2 Scatter Line + 1 Radio Line (nfa - Trondheim Tail - Graakallen) Pos 543 m AMSL TX RX Equipment:1 Radio Line (NG - Oslo AAA) > NSOZ Pos 246 m TX RX Equipment:2 Scatter Line + 1 Radio Line (Oslo YYY - Svartas) > NVAZ Pos TX RX Equipment:3 Radio Line (nga - Oslo Tail 01 - Kolsaas) > NKOZ Pos TX RX Equipment:1 Radio Line (ngb - Oslo Tail 02 - Maakeroy) > NVEZ Pos 14 m TX RX Equipment:1 Radio Line (NH - Grimstad - Stormyrheia/hørte) > NSMZ Pos 326 m TX Rx