- FRITZ!Box 6890 LTE
- FRITZ!Box 6840 LTE
- FRITZ!Box 6810 LTE
- FRITZ!Box 6660 Cable
- FRITZ!Box 6591 Cable
- FRITZ!Box 6490 Cable
- FRITZ!Box 5491
Number of telephony and DECT devices that can be used with the FRITZ!Box
You can use various telephony devices with the FRITZ!Box, for example telephones, fax machines, answering machines, or PBXs (telephone systems). How many devices can be used depends on the type of connection.
If you set up an additional FRITZ!Box as a Mesh Repeater, the number of possible devices increases accordingly.
1 DECT devices
The following DECT devices can be registered with the FRITZ!Box at the same time:
2 IP telephones and IP door intercom systems
3 Analog devices
4 ISDN devices
You can connect up to eight devices, for example a telephone or PBX (telephone system), to the "FON S0" socket on the FRITZ!Box at the same time using an ISDN distributor or S0 bus cabling. 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)
5 Integrated answering machine and fax function
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