CPA Class Parameters

By default, the Excel platform uses the following four classes:

0x00 Standard North America

0x01 Dial Tone

0x02 CPC Detection

0x03 Energy Detection

The parameters associated with a CPA class are defined in CPA Class Parameters and Definitions. To modify a class or to add a new class, use the CPA Class Configure message. The Excel platform supports up to 15 classes. A class can contain up to 15 pattern members, and 30 patterns are allowed for each Excel platform. Class elements are given in Class Elements.

Table 9-19 CPA Class Parameters and Definitions

Class Parameter

Definition

Class Members

Patterns that are included in the class

Confirmation

Amount of time to wait to detect a pattern

Confirmation/No Report

Amount of time after detection of a tone to wait for pattern confirmation before terminating CPA

Continuous Silence Timeout

Amount of time after CPA is initiated to wait to hear any tone

Maximum On Timer

The maximum amount of time a tone must be "on" without a pattern match before the "continuous on" result is reported

Maximum Off Timer

The maximum amount of time silence must be detected before the "not determined" result is reported; amount of time to validate a silence detection before declaring it as silence

Minimum Frequency Glitch Time

Amount of time to validate a tone detection

Minimum Silence Glitch Time

Amount of time to validate a silence detection

Mode

Call Progress Analysis Mode (for example, Advanced Answer Detect, Energy Detection)

Mode Specific Values

Values to configure for specific CPA mode

Start Delay

Amount of time to wait before analysis begins

Tone Burst Answer Threshold

The number of frequency bursts in 500ms before answer is declared