T-ISDN
T-ISDN was the product name for a ISDN - telephone connection in the fixed network ( T-Net ) of Deutsche Telekom AG (DTAG) . The "T" in T-ISDN was the abbreviation for "Telekom". Since the middle of May 2008, DTAG has been calling the ISDN connection “T-Home Universal Connection”.
The ISDN connection is now being marketed by Telekom Deutschland GmbH under the brand name “Universal”. It costs 8 euros more than a non-ISDN connection, namely 26.95 euros per month.
The flexible ISDN connection with 6 working days' notice is sold under the name "Call Plus".
The technology used for ISDN connections is Euro-ISDN .
In the long term, Telekom wants to convert all ISDN connections to IP technology ( Next Generation Network ).
Apart from that, however, booking a new connection with ISDN technology is still possible and necessary for certain applications.
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The "T" ran like a red thread through the nomenclature of the Telekom Group and is an integral part of its corporate identity , e.g. B. T-Home , T-Systems , T-Mobile or T-DSL .