| Manufacturer | Part # | Datasheet | Description |

Clare, Inc.
|
M-991 |
171Kb/6P |
Call Progress Tone Generator |

CML Microcircuits
|
FX643 |
274Kb/14P |
Call Progress Tone Detector |

List of Unclassifed Man...
|
FX623 |
49Kb/6P |
Call Progress Tone Decoder |

CML Microcircuits
|
FX633 |
299Kb/13P |
Call Progress Tone Detector |

Holtek Semiconductor In...
|
HT9020B |
120Kb/7P |
Call Progress Tone Detector |

CML Microcircuits
|
FX623 |
50Kb/6P |
Call Progress Tone Decoder |

List of Unclassifed Man...
|
FX633 |
331Kb/12P |
Call Progress Tone Detector |

Clare, Inc.
|
M-985-01 |
241Kb/8P |
Precise Call Progress and Special Information Tone Generator |
| M-982-02 |
200Kb/7P |
Precise Call Progress Tone Detector |

List of Unclassifed Man...
|
bu8877 |
102Kb/3P |
Call Progress Tone Decoder for Telephone |

Holtek Semiconductor In...
|
HT9020 |
476Kb/12P |
Call Progress Tone Decoder & ABR Controller |

List of Unclassifed Man...
|
MX623 |
59Kb/6P |
Line-Powered Call Progress Tone Detector |

IXYS Corporation
|
M-980-02 |
206Kb/7P |
3V/5V General Purpose Call Progress Tone Detector |

Clare, Inc.
|
M-980-02 |
181Kb/6P |
3V/5V General Purpose Call Progress Tone Detector |

CML Microcircuits
|
FX663 |
304Kb/17P |
Call Progress Decoder |

NXP Semiconductors
|
NE5900 |
50Kb/7P |
Call progress decoder 1986 May 8 |

CML Microcircuits
|
MX613 |
141Kb/10P |
Global Call Progress Detector |

Microsemi Corporation
|
MX633 |
95Kb/11P |
CALL PROCRESS TONE DETECTOR |

List of Unclassifed Man...
|
FX003 |
372Kb/6P |
QTC Selective Call Tone Decoders |

NXP Semiconductors
|
TEA1083 |
139Kb/20P |
Call progress monitor for line powered telephone sets March 1994 |