Transmission apparatus having a TCP/IP protocol stack (S, S'), which transmission apparatus is designed to transmit data in a time-sensitive network, TSN, wherein the transmission apparatus comprises at least one TSN-compliant virtual Ethernet interface (2.2, 2.2') and an associated TSN control unit (3.1, 3.1'), wherein the at least one TSN-compliant virtual Ethernet interface (2.2, 2.2') is designed to send and/or receive a TSN-compliant data stream (2.1, 2.1') in a physical layer of the TCP/IP protocol stack (S, S') and wherein the TSN-compliant data stream (2.1, 2.1') is configurable and/or parameterizable by means of the associated TSN control unit (3.1, 3.1'), wherein the transmission apparatus is provided with a plurality of virtual TSN-compliant Ethernet interfaces (2.2, 2.2') that are configurable and/or parameterizable independently by means of a respective associated TSN control unit (3.1, 3.1'), that are connected to at least one respective application running in an instance of the application layer (4, 4') via an Internet Protocol, IP, layer of the TCP/IP protocol stack (S, S') and that are connected to the physical layer of the TCP/IP protocol stack (S, S') jointly via a physical Ethernet adapter, and wherein the TSN control unit (3.1, 3.1') is designed, and connected to the associated TSN-compliant virtual Ethernet interface (2.2, 2.2'), such that TSN stream classes for a data stream transmitted via the TSN-compliant virtual interface are configurable, which determine the temporal structuring, a prioritization or guaranteed latencies within the time-sensitive network TSN, and wherein an application transmission bandwidth is limited by shaping in a virtual TSN-compliant Ethernet interface (2.2, 2.2') such that the sum of all application transmission bandwidths of the applications associated with this virtual TSN-compliant Ethernet interface (2.2, 2.2') does not exceed a physically available transmission bandwidth and control and monitoring information transmitted with the data is used to indirectly convey information concerning the usable transmission bandwidth to a legacy application, the legacy application being designed for accessing a non-TSN-compatible Ethernet interface that, although able to access the services of the Ethernet transmission protocol that are provided by a TSN-compatible Ethernet interface, cannot access the additionally provided means for controlling the timing response of the transmission. wherein the transmission apparatus is provided with a plurality of virtual TSN-compliant Ethernet interfaces (2.2, 2.2') that are configurable and/or parameterizable independently by means of a respective associated TSN control unit (3.1, 3.1'), that are connected to at least one respective application running in an instance of the application layer (4, 4') via an Internet Protocol, IP, layer of the TCP/IP protocol stack (S, S') and that are connected to the physical layer of the TCP/IP protocol stack (S, S') jointly via a physical Ethernet adapter, and wherein the TSN control unit (3.1, 3.1') is designed, and connected to the associated TSN-compliant virtual Ethernet interface (2.2, 2.2'), such that TSN stream classes for a data stream transmitted via the TSN-compliant virtual interface are configurable, which determine the temporal structuring, a prioritization or guaranteed latencies within the time-sensitive network TSN, and wherein an application transmission bandwidth is limited by shaping in a virtual TSN-compliant Ethernet interface (2.2, 2.2') such that the sum of all application transmission bandwidths of the applications associated with this virtual TSN-compliant Ethernet interface (2.2, 2.2') does not exceed a physically available transmission bandwidth and control and monitoring information transmitted with the data is used to indirectly convey information concerning the usable transmission bandwidth to a legacy application, the legacy application being designed for accessing a non-TSN-compatible Ethernet interface that, although able to access the services of the Ethernet transmission protocol that are provided by a TSN-compatible Ethernet interface, cannot access the additionally provided means for controlling the timing response of the transmission.