If it is not possible to dial a call over the Internet, the telephone connection is alternatively established using the fixed-line network.
Note: You are then charged for your fixed-line connection.
FRITZ!Box rejects incoming calls to an Internet number if the caller does not transmit the Caller ID.
This option can be necessary if the Internet router does not forward incoming Internet calls to FRITZ!Box. FRITZ!Box keeps port forwarding of the Internet router enabled for Internet telephony.
An ENUM request will be performed before the number is dialed. The Internet number listed in the domain will then be used to dial the number.
This function prohibits the transmission of data during pauses in speech. Enable this function to reduce data streaming during Internet telephone calls.
Select here how to use the bandwidth of the DSL connection for telephone calls.
FRITZ!Box adjusts the voice coding automatically according to the speed of your DSL connection.
FRITZ!Box always uses lossless voice coding as in the fixed-line network
FRITZ!Box uses voice coding with compression to reduce the data volume for Internet calls.
Indicate Type of Service
Marking the voice packets in this way makes it possible for these packets to be prioritized by routers that support this indication.
| Indicate SIP packets | |
| Indicate RTP packets | |
This feature must be supported by your DSL provider.
The values required for the ATM settings are supplied by your DSL provider.
| Encapsulation | |
Encapsulation