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
Moj Telekom
Telekom Slovenije
Easy Voicemail
Sudhan Technology Solutions
Adria Telekom
WNET Media GmbH
Telekom ME
Crnogorski Telekom
Spark Voicemail
Norwood Systems (AUS) Pty Ltd