Hi Michiel!

Mar 28 11:09 2017, Michiel van der Vlist wrote to Andrew Leary:

 FR>>>> 5.8. ISDN Capability Flags

 AV>>> Do anyone still use it?

 AL>> Yes.

 MvdV> But it is technology on the way out. Telcos are converting from 
 MvdV> POTS/ISDN to VOIP and very few offer ISDN emulation and if they do, 
 MvdV> it is seldom a complete emulation.

ISDN is marked EOL ;) Deutsche Telekom is migrating ISDN to VoIP and plans to
shut down ISDN end of next year. A few telcos keep running ISDN for some time
longer but the technology was phased out by manufacturers. So there aren't any
spare parts besides what's left in your warehouse. My guess is that ISDN will
be history in about 5 years.

For ISDN (X.75) over VoIP you can use RFC4040 (clear mode). AFAIK the most
inexpensive device supporting that is the FritzBox.

ciao,
Markus

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