The CH version was only relevant if the box was connected to an analogue DSL connection (not ISDN) and there was no modem from the provider between the box and the connection. The reason for this was that Swisscom made a distinction here, with an analogue connection there was more bandwidth for DSL than with ISDN. In Germany, only the modulation for ISDN was used, regardless of whether there was an analogue or ISDN connection (with a corresponding restriction on the maximum bandwidth for analogue connections). The D version has therefore always worked in CH on ISDN DSL.
The disadvantage of the CH/International version was the very slow update supply. As I have always used the boxes on ISDN and later behind a TV cable modem, I have always explicitly used the D version and have never regretted it.
Rocksresort Laax: win a stay for 4 people
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