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Telephony (4)

Answering Machine / Mail Box

Modified on 30 May 2022
What are value-added services / premium services?

Modified on 30 May 2022
How can I enable Wi-Fi Calling / WLAN telephony on iOS and Android?

Modified on 17 Sep 2021
How can I activate Visual Voicemail on iOS and Android?

Modified on 17 Sep 2021