A transmission service is a telecommunications service
that is limited to the low-layer, network-relevant transmission functions, i.e., the functions in the network area, transmission and switching. A transmission service only provides the user
with acertain transmission capacity. The type of use is left up to the user.
In Euro-ISDN, the transmissionservices
available in Germanyare
line switching at 64 kbit/s and 3.1 kHz for the a/b interface and data packet switching via the D channel and the B channel.
Furthermore, telephone service from the analogue telephone network with data transmission via modems, screen text and telecopying.