Library /sys$common/syshlp/dtsdtr.hlb DTS  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    DTS and DTR are cooperating tasks that perform various functions to
    exercise network software. DTR functions as a slave to DTS. DTS
    initiates each test by issuing a connection request to DTR. DTS
    passes parameters pertinent to the type of test request to DTR in
    the optional data of the connection request. The user interface to
    DTS consists a group of commands:

 	CONNECT
 	DATA
 	DISCONNECT
 	INTERRUPT

    You may abbreviate command keywords and qualifiers to four characters
    or less (if unique).

    Note that, when using DTS commands in a batch job, you must use uppercase
    characters in the command.