Configuration Bits

Pattern-specific configuration (see CPA Pattern Configure message)

0x01 = Last Interval Continuous (for pattern ending with continuous tone)

0x02 = Detect Tone After Determination (for reporting Intercept Tones)

0x04 = Use As Internal Dial Tone (to detect dial tone without invoking Call Progress Analysis)

CPA Result on Pattern Loss

Call Progress Analysis Result to report when a pattern has been matched but discontinues before "interval cycles to report". (CPA Result message).

Interval Cycles to Match

The number of times an Interval Sequence must be repeated before declaring the pattern valid

Interval Cycles to Report

The number of times an Interval Sequence must be repeated before reporting a Call Progress Result to the host

Interval Descriptor Count

The number of Interval Descriptors in the pattern

Interval Descriptor

An Interval Descriptor is a list of the tones and intervals that constitute a pattern. The Excel platform uses the Interval Descriptor to confirm that a specific pattern has been detected.

An Interval Descriptor consists of the Tone ID, Min. Filter, and Max. Filter, where:

Tone ID – A valid Tone ID

Minimum/Maximum Filter (MSB, LSB) – Minimum and maximum duration for this tone interval - A tone is determined as valid if the on and off cycles fall within the minimum and maximum times.