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cdiAssertSignal
Description
Asserts a supervisory signaling pattern to the station.
Prototype
DWORD
cdiAssertSignal
(
CTAHD
ctahd
,
DWORD
pattern
)
ctahd
CTA context handle.
pattern
Bit mask to assert. (See
Details
below.)
Return Values
SUCCESS
CTAERR_INVALID_CTAHD
The CTA handle is invalid.
CTAERR_BAD_ARGUMENT
An argument is not in the valid range.
Events
None.
Details
This function asserts a signaling pattern at a station.
pattern
can be any of the following values:
Pattern Value
Description
0x00
Battery off, no ringing.
0x08
Battery on, no ringing.
0x0C
Battery on, continuous ringing.
This function is not intended for use in typical applications. Ordinarily, the supervisory signaling is transparently controlled by the on-board DSP. Use this function when special purpose applications require explicit control of the supervisory signaling. In such cases, disable enhanced mode as described in
Section 3.2
.
For more information about sending and receiving signaling patterns, refer to
Section 3.9
.
See Also
cdiGetSignalState
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