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NF:tapi.lineSetCallParams |
lineSetCallParams function (tapi.h) |
The lineSetCallParams function allows an application to change bearer mode and/or the rate parameters of an existing call. |
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tapi2\linesetcallparams.htm |
tapi3 |
c8088116-2bfc-420f-a83a-d00c7947b6e7 |
12/05/2018 |
_tapi2_linesetcallparams, lineSetCallParams, lineSetCallParams function [TAPI 2.2], tapi/lineSetCallParams, tapi2.linesetcallparams |
tapi.h |
Windows |
Tapi32.lib |
Tapi32.dll |
Windows |
19H1 |
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The lineSetCallParams function allows an application to change bearer mode and/or the rate parameters of an existing call.
Handle to the call whose parameters are to be changed. The application must be an owner of the call. The call state of hCall can be any state except idle or disconnected.
New bearer mode for the call. This parameter uses one and only one of the LINEBEARERMODE_ Constants.
Lower bound for the call's new data rate. The application can accept a new rate as low as this one.
Upper bound for the call's new data rate. This is the maximum data rate the application can accept. If an exact data rate is required, dwMinRate and dwMaxRate should be equal.
Pointer to the new dial parameters for the call, of type LINEDIALPARAMS. This parameter can be left NULL if the call's current dialing parameters are to be used.
Returns a positive request identifier if the function is completed asynchronously, or a negative error number if an error occurs. The dwParam2 parameter of the corresponding LINE_REPLY message is zero if the function succeeds or it is a negative error number if an error occurs. Possible return values are:
LINEERR_BEARERMODEUNAVAIL, LINEERR_NOTOWNER, LINEERR_INVALBEARERMODE, LINEERR_OPERATIONUNAVAIL, LINEERR_INVALCALLHANDLE, LINEERR_OPERATIONFAILED, LINEERR_INVALCALLSTATE, LINEERR_RATEUNAVAIL, LINEERR_INVALPOINTER, LINEERR_RESOURCEUNAVAIL, LINEERR_INVALRATE, LINEERR_UNINITIALIZED, LINEERR_NOMEM.
This operation is used to change the parameters of an existing call. Examples of its usage include changing the bearer mode and/or the data rate of an existing call.