General Description

The HT9020 provides two modes; Call progress tone decoder and Busy redial controller, to support the application fields.

Features

• Low cost 32768Hz crystal

• Low power consumption

• Operating voltage: 2.5V to 5.5V (CPT mode)

2.0V to 5.5V (ABR mode)

• Call progress tone decoder

– Fully decoded tristate call progress status output

– Works with traditional precision or PBX call progress tones

• Busy redial controller

– Repeat times: 3, 10 or 15 times ( 2, 5, 15 times by mask option)

– 4.65, 32.6 and 62.8 sec break time (16.3sec by mask option)

– Auto-terminate after 30 times (default) ringback tone receipt