You access all facilities of the Call Level Interface by calling the module HRNHLLTM. HRNHLLTM requires eight standard parameters, described in
HRNHLLTM Module Parameters. Additional parameters are optional, and are used to convey exit information for advanced applications (refer to
Chapter 17, Multiple-Session Execution Environments in Batch).
Standard operating system parameter passing and linkage conventions are used. HRNHLLTM is link-edited with the calling application program. Refer to the sample members COBCOLNK in the JCL data set distributed with TIBCO Object Service Broker for an example link-edit of a user client program with the Call Level Interface modules.
Some Call Level Interface functions require a NULL call parameter. In this case, a dummy value must be coded in that position. The value of the dummy parameter is ignored.