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LINEDIALTONEMODE_ Constants

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The LINEDIALTONEMODE_ bit-flag constants describe different types of dial tones. A special dial tone typically carries a special meaning (as with message waiting).

LINEDIALTONEMODE_EXTERNAL

This is an external (public network) dial tone.

LINEDIALTONEMODE_INTERNAL

This is an internal dial tone, as within a PBX.

LINEDIALTONEMODE_NORMAL

This is a normal dial tone, which typically is a continuous tone.

LINEDIALTONEMODE_SPECIAL

This is a special dial tone indicating that a certain condition (known by the switch or network) is currently in effect. Special dial tones typically use an interrupted tone. As with a normal dial tone, this indicates that the switch is ready to receive the number to be dialed.

LINEDIALTONEMODE_UNAVAIL

The dial tone mode is unavailable and will not become known.

LINEDIALTONEMODE_UNKNOWN

The dial tone mode is not currently known but may become known later.

Remarks

The high-order 16 bits can be assigned for device-specific extensions. The low-order 16 bits are reserved.

The LINEDIALTONEMODE_constants are used within the LINECALLSTATUS data structure for a call in the dialtone state.

Requirements

Requirement Value
TAPI version
 Requires TAPI 2.0 or later
Header
Tapi.h