CPA Class Parameters

By default, the CSP 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 CSP supports up to 15 classes. A class can contain up to 15 pattern members, and 30 patterns are allowed for each CSP. 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

 

Table 9-20 Class Elements

Class

Standard
N. American 0x00

Dial Tone

0x01

CPC
Detection
0x02

Energy
Detection0x03

Mode

0x01
(Adv. Answer Detect)

 

 

Energy Detection

Tone Burst Answer Threshold

4/250 ms

 

 

4/500 ms

Start Delay

0x00

0x00

0x00

0x00

Continuous Silence
Timeout (ms)

25,000

25,000

0xFFFF

25,000

Confirmation (ms)

13,000

25,000

0xFFFF

13,000

Confirmation /No Report (ms)

22,000

15,000

0xFFFF

22,000

Min. Frequency Glitch Time (ms)

40

20

20

20

Min. Silence Glitch Time (ms)

60

20

20

60

Maximum On Timer (ms)

2,800

25,000

0xFFFF

2,800

Maximum Off Timer (ms)

5,000

25,000

0xFFFF

5,000

Mode Specific 1

0x0000

0x0000

0x0000

0x0005

Mode Specific 2

0x0000

0x0000

0x0000

0x0002

Pattern Members

0x01 Ringback
0x02 Double Ringback
0x03 Busy
0x04 Reorder
0x05 PBX Intercept
0x06 SIT Intercept A
0x07 Vacant Code
0x08 Reorder-LEC
0x09 No Circuit LEC
0x0A Reorder Carrier
0x0B No Circuit Carrier
0x0C PBX Dial Tone
0x0D Standard Dial Tone

0x0C PBX Dial Tone

0x0D Standard Dial Tone

0x0E CPC Detection

0x01 Ringback

0x02 Double Ringback

0x03 Busy

0x04 Reorder