LINEDIGITMODE_ Constants

The LINEDIGITMODE_ constants describe different types of inband digit generation.

LINEDIGITMODE_DTMF

Uses DTMF tones to signal digits. Valid digits are 0 through 9, '*', '#', 'A', 'B', 'C', and 'D'.

LINEDIGITMODE_DTMFEND

Uses DTMF tones to signal digits and detect the down edges. Valid digits are 0 through 9, '*', '#', 'A', 'B', 'C', and 'D'.

LINEDIGITMODE_PULSE

Uses rotary pulse sequences to signal digits. Valid digits are 0 through 9.

No extensibility. 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. Detecting digits sent as pulses must therefore be able to detect these sequences of 1 to 10 audible clicks.

Requirements

  Windows NT/2000: Requires Windows NT 4.0 SP3 or later.
  Windows 95/98: Requires Windows 95 or later.
  Version: Requires TAPI 2.0 or later.
  Header: Declared in Tapi.h.