 Important: |
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These constants describe different types of inband digit generation.
The following table shows the LINEDIGITMODE constants.
| Value | Description |
|---|---|
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LINEDIGITMODE_DTMF = 0x00000002 |
Uses DTMF tones to signal digits. Valid digits are zero (0) through 9, '*', '#', 'A', 'B', 'C', and 'D'. |
|
LINEDIGITMODE_DTMFEND = 0x00000004 |
Uses DTMF tones to signal digits and detect the down edges. Valid digits are zero (0) through 9, '*', '#', 'A', 'B', 'C', and 'D'. |
|
LINEDIGITMODE_PULSE = 0x00000001 |
Uses rotary pulse sequences to signal digits. Valid digits are zero (0) through 9. |
Remarks
These constants cannot be extended. All 32 bits are reserved.
A digit mode can be specified when generating or detecting digits. Note that pulse digits are generated by making and breaking the local loop circuit. These pulses are absorbed by the switch. The remote end merely observes this as a series of inband audio clicks. In order to detect digits sent as pulses, the remote device must be able to detect these sequences of 1 to 10 audible clicks.
Requirements
| Header | tapi.h |
| Windows Embedded CE | Windows CE 3.0 and later |
| Windows Mobile | Windows Mobile Version 5.0 and later |