2.1 Function Syntax Conventions

The IP Media library (IPML) functions use the following format:

ipm_Function (DeviceHandle, Parameter1, Parameter2, ..., ParameterN, Mode) 

where:

ipm_Function

is the name of the function

DeviceHandle

is an input field that directs the function to a specific line device

Parameter1, Parameter2, ..., ParameterN

are input or output fields

Mode

is an input field indicating how the function is executed. This field is applicable to certain functions only. For example, ipm_Close( ) can only be called synchronously, so Mode is not used. Possible Mode values are:

• EV_ASYNC for asynchronous mode execution. When running asynchronously, the function will return 0 to indicate it has initiated successfully, and will generate a termination event to indicate completion.
• EV_SYNC for synchronous mode execution. When running synchronously, the function will return a 0 to indicate that it has completed successfully.

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