Voicemail
Deutsche Telekom AG
Telekom
Magyar Telekom Nyrt.
Slovak Telekom, a.s.
Telekom MK
Makedonski Telekom AD Skopje
MyAccount Telekom
TELEKOM ROMANIA MOBILE COMMUNICATIONS SA
Adria Telekom
WNET Media GmbH
Spark Voicemail
Norwood Systems (AUS) Pty Ltd
Telekom ME
Crnogorski Telekom
Moj Telekom
Telekom Slovenije