| 摘要 |
The invention relates to a method of transmitting data on an ISDN subscriber line having a data channel (D16) and two or more voice- or data-carrying channels (B64), using the data channel. The method is characterized in that on receipt of each connection request, a check is made to determine whether the desired connection can or is to be established as a data connection, that said connection is established via the data channel (D16), that a further check is made to determine whether a voice- or data-carrying channel (B64) is still free, that the capacity of said channel is added to the connection via the data channel (D16), that provision is made for continuously monitoring whether a voice- or data-carrying channel (B64) occupied by the data connection is requested for another connection or whether such a channel hitherto needed for another connection is no longer needed therefor, that a voice- or data-carrying channel (B64) requested by another connection and occupied by the data connection is made available for the requested connection, that the capacity of a channel no longer needed by another connection is added to the data connection, and that for the transmission of data over the data connection, the respective total available capacity is used. The invention further relates to a line termination for an exchange, an exchange with a line termination, a network termination for a data terminal, and a data terminal with a line termination.
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