[HW] NT+2ab: analog without UK0


I’ve setup an internal S0 Bus (so the UK0-line is not connected!) using an HFC card and an NTBA “NT+2ab”.

internal ISDN phones in the S0 Bus work great but it would be very cool if I could use the built-in ab-converter to connect analog phones.
But I do not get a dialtone on these ports.

Do you know if it’s possible to use these analog ports in this case? Are these ports switched in parallel to the S0 Ports?

Thanks in advance!