It turns out that it's not very easy to bend the 64pos ribbon cable,
so let's make sure the IDC connectors align with the plane of the
ribbon cable from the PSTN/ISDN line cards.
These board designs assumes that you use a 64pos (type 3 a+c)
DIN-connector with a flat ribbon cable to a 2x32 2.54mm pitch (IDE/SCSI
style) header to interconnect them.
The point is that assembling that ribbon cable with IDC technology is
much faster than performing soldering or LSA+ type termination on 32
individual wires.