Reference for Avaya Communications DEFINITY G3

Chapter 11. Example program call and message flows

This chapter provides examples that show sequences of information flow from the DEFINITY G3. The examples include telephone calls initiated by CallPath Services program calls and telephone calls initiated manually using a telephone.

To improve readability, only significant parameters and fields are listed in the examples. The following conditions apply to all examples, unless noted otherwise:

• An Initialize_Call_Profile program call has been issued at some point prior to the start of the example.
• A Set_Return_Response program call has been issued to set the value of return_response to STL_RESPONSE_RETURNED.
• The initialized call profile characteristics are used by the application programs except as noted below:
  • automatic_answer has been set to STL_SWITCH_DEFAULT_ANSWER
  • holding_party_callback has been set to STL_SWITCH_DEFAULT_CALLBACK
  • holding_party_calling has been set to STL_SWITCH_DEFAULT_CALLING
• The Receive program call has been omitted from the examples.
• Each program call made by the application program returns with a return_code value of STL_OK.
• A Monitor program call has been issued that specifies a mode of STL_START and that requests monitoring of all event messages supported by the DEFINITY G3. Each event message is monitored with rank_list_element set to STL_RANK_BOTH.

The direction (Dir) column in each table indicates whether the information flow is from the host application program to the switch (S<H) or from the switch to the host application program (S>H). The parentheses around a parameter indicate that the parameter is returned to the application program, but not specified by the application program.