FRITZ!Box 7583 Service - Knowledge Base

FRITZ!Box 7583 Service

Number of ISDN devices and supported service indicators

With the adapter included with delivery you can use both of the FRITZ!Box's "FON S0" sockets, without the adapter you can only use one socket. If you use an ISDN distributor or S0 bus cabling, you can connect up to eight devices to each socket at the same time, for example a telephone or PBX (telephone system). The FRITZ!Box can provide power to one ISDN device, but the other ISDN devices must use their own power supply.

You can use the following ISDN service indicators with devices connected to the "FON S0" socket:

  • Voice (service indicator 1)
  • Data (service indicator 2)
  • Audio 3.1 (service indicator 4)
  • Telephony (service indicator 16)
  • Fax G2/G3 (service indicator 17)