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001284, 00290, 00870, 00871, 00872, 00873, 00874, 0088216 as well as special numbers and information.
Payfonemode at the fritzbox has to be enabled so rogue persons cannot override our settings.
Enable: #91*<Pin>#6789*6789# (where PIN is 0000 per default)
Can only be disabled by resetting the fritz box!
Wifi
Wifi is the FritzBox on channel 1 (wuppdays; Living Building first floor first north room)
a TPLink WR841N on channel 13 (Freifunk + mesh as well as wuppdays)
and a TPLink WDR4300 on channel 6/36 (wuppdays; Living Building ground floor first south room)