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Telekom Tectra

This is a relatively early ISDN phone by Deutsche Telekom. It originally only supported 1TR6, but later a firmware upgrade was released in form of an EEPROM to upgrade it to both 1TR6 and EDSS1 (autodetect).

There was also a Tectra KS that included a Terminal Adaptor (V.24/RS232)

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Updated by WIMPy about 1 month ago · 2 revisions

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