BTX (Bildschirmtext, translated as Screentext) has been a German service, allowing to transfer data via telephone line. In the 8bit era, the Deutsche Bundespost (German postal service) still owned the monopoly for telecommunications in Germany, so the only legal way to transmit electronic data via telephone line has been to use their BTX service. The service was ultimatively suspended in 2007.
Beginning in late 2019, some work has begun to revive parts of the BTX service. There are [https://btx-museum.de/2020/02/29/der-neue-dbt-03-emulator/ emulators providing D-BT 03 ports], and some BTX pages were [https://www.heise.de/newsticker/meldung/36C3-Congress-wie-1984-mit-BTX-und-Originalarchiven-4624507.html restored by feeding recordings of original modem sessions to software demodulators].
== Pictures ==
File:SchneiderBtxModulCPC36486.jpg
File:SchneiderBtxModulCPC36486-2.jpg
</gallery>
=== PCB ===
<gallery>
File:Schneider BTX Modul - top.jpg|Top
File:Schneider BTX Modul - bottom.jpg|Bottom
</gallery>
'''Note''': Schneider also made a BTX module for Schneider Television Sets, although that device had nothing to do with the CPC, its housing was later re-used for the CPC's [[Schneider RS232 Interface]].
== Downloads ==
* [[Media:Schneider BTX Modul ROM dump.zip|Schneider BTX module ROM dump]]
* [[Media:Schneider BTX Modul Manual (German).pdf|Manual (German)]]
* [[Media:Schneider BTX Modul Geraete-Pass.pdf|Certificate for HiFi-Systems (Geräte-Paß)]]
* [[Media:Schneider BTX Modul Box.pdf|Scan of the box]]
== Weblinks ==
* http://en.wikipedia.org/wiki/Bildschirmtext - wikipedia article on BTX (english, short description)
* http://de.wikipedia.org/wiki/Bildschirmtext - wikipedia article on BTX (german, more detailed description)
* https://btx-museum.de/2020/02/29/der-neue-dbt-03-emulator/ (german)
* https://www.heise.de/newsticker/meldung/36C3-Congress-wie-1984-mit-BTX-und-Originalarchiven-4624507.html (german)
[[Category:Network]]