HT9020
HT9020 is Call Progress Tone Decoder & ABR Controller manufactured by Holtek Semiconductor.
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Call Progress Tone Decoder & ABR Controller
Features
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- 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
General Description
The HT9020 provides two modes; Call progress tone decoder and Busy redial controller, to support the application...
