RTSE parameters related to the Session Layer services are shown in Figure . Dialog-mode selects either monologue or two-way alternate to specify whether transfers will occur in one direction only (monologue) or both directions by turns (two-way alternate). Initial turn specifies which side has the right to send data first. If the monologue dialog mode was chosen, then the first side to have the turn will be the only one to send data. User data is optional as in other service parameter lists and provides a way for the service user to pass information to its peer.
Figure: Parameters of RT-OPEN
Shown in Figure parameters of the RTSE service RT-TRANSFER, the user data to be sent and the maximum time allowed to complete the transfer. (Note: The RTSE RT-TRANSFER service was defined as consisting of three services: RT-TRANSFER.request, RT-TRANSFER.indication, and RT-TRANSFER.confirmation. In this design, the RTSE service provider does not wait for a response from its user before sending the PDU to its peer that says the transfer has occurred.  More recent descriptions of the service primitives do incorporate a RT-TRANSFER.response primitive. )
Figure: Parameters of RT-TRANSFER