 | _TELEKOMMUNIKATION | |
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| Billing & Customer Mgmt. | |
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| Callcenter Solutions | |
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| Carrier Management | |
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| Conferencing Services | |
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| Mobile Solutions | |
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| Collaboration Services | |
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| Messaging Services | |
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| Mobile Marketing | |
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| TK-Infrastruktur | |
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| Voice over IP | |
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| _INTERNET | E-COMMERCE | |
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| _MEDIEN & ENTERTAINMENT | |
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| _IT-SERVICES | |
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| _STRATEGISCHE PARTNER | |
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