Swisscom
Swisscom (Switzerland) Ltd.
IP-Plus engineering, Postfach, CH-3050, Bern, Switzerland
+41-58-221-98
S3 Company Ltd.
Bulgaria, Sofia, 1574, blvd. Shipchenski prohod 63
+359 88 661 8006
Microsystem-Kecskemét
6000 Kecskemét, Nagykőrösi u. 12
+3620 3333557