As I built this for the 38C3 c3isdn network anyway, I also deployed an instance on DIVF. This means that you can use fax polling to get the full OCTOI phonebook from +49 30 9999 1001.
Onc we add a service class column to the wiki table, we can also generate sub-lists only for dialup or telefax or video telephony.
The cod for this lives at retronetworking/fax-services: A collection of fax services for people wanting to play with faxes as retronetworking activity. - Osmocom gitea in case anyone is interested.
