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cdiGetSignalState

Description

Queries the current state of the supervisory signaling bits.

Prototype

DWORD cdiGetSignalState (CTAHD ctahd,
DWORD *pattern )

ctahd CTA context handle.

pattern Current pattern sent to the line.

Return Values

Events

Details

pattern returned by this function points to a value indicating the state of the supervisory signaling bits for a station. Possible values are:
Pattern Value

 Description

00000xxx1

 The bits are low (the station is on-hook).

00001xxx

 The bits are high (the station is off-hook).

1 xxx is any value.

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

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