Telephone Components
The choice of components for use in cost conscious products such as telephones is highly important.
This page is intended to point you in the direction of component manufacturers who can supply the devices you need.
CML manufacture the FX602Caller Identification device.
The device is capable of operating inaccordance with all the principal caller identification protocols.
CML can be contacted by telephone/facsimile at the following address:
1, Wheaton Road
Witham,
Essex CM8 3TD
United Kingdom
Tel: +44-(0)1376 513833
Fax: +44-(0)1376 518247
Have introduced the ITC135P and ITC137P range of integrated telecom circuits.
These devices are intended for use in telephones as hook switch components, but can function as ring or loop current detection devices.
These components are also fitted with three sener diodes to provide a measure of transient protection.
The devices have an 'on' resistance of 15 ohms and provide a blocking voltage of 350V and an isolation voltage of 3750Vrms.
CP Clare can be contacted by telephone/facsimile at the following address:
Bampslaan 17
3500 Hasselt
Belgium
T. +32-(0)11-300860
F. +32-(0)11-300890
Philips Semiconductors manufacture a wide range of components useful for simple and complex telephone designs.
Philips have introduced the TEA1095 device which is intended to enhance the performance of handsfree operation.
The device also offers on-chip dialtone detection and is suitable for use in line powered designs.
Philips Semiconductors can be contacted by facsimile at the following address:
Corporate Centre
Building BE-p 047
5600 MD Eindhoven
The Netherlands
Fax: +31-40-2724825
TEMIC manufacture the U4090B Feature phone circuit.
The device offers a wide range of attractive features, including:
 | Built-in-line detection |
| Answering machine interface |
| Operation with currents as low as 10mA |
TEMIC can be contacted by telephone/facsimile at the following address:
Theresienstrasse 2
74072 Heilbronn
Germany
Tel: +49-7131-67-2831
Fax: +49-7131-67-2423
AVX have introduced a new range of Kyocera PCRT ceramic receivers.
AVX can be contacted by telephone/facsimile at the following address:
Admiral House
Harlington Way
Fleet
Hampshire GU13 8BB
United Kingdom
Tel: +44-(0)1252-770000
Fax: +44-(0)1252-770001
Sonitron manufacture the SMA range of PCB mountable buzzers which provide high output levels while maintaining low current consumption.
Sonitron can be contacted by telephone/facsimile at the following address:
Kasteelstr 93
9100 Sint-Niklaas
Belgium
Tel: +32-3-776-4838
Fax: +32-3-766-0228
Projects unlimited manufacture a wide range of indicators, transducers and speakers for use in a many types of telecommunications products.
Projects unlimited can be contacted by telephone/facsimile at the following address:
3680 Wyse Road
Dayton
Ohio 45414
United States of America
Tel: 001-513-890-1918
Fax: 001-513-890-4911
CML manufacture the FX633and FX643 ranges of call progress monitoring devices.
The devices are capable of detecting the following supervisory tones:
| Dial Tone |
| Special Tones |
| Ringing Tone |
| Busy Tone |
In addition, the FX643 device can detect the following signals:
| Special Information Toness (S.I.T.) |
| Single Tones |
| Dual Tones |
CML can be contacted by telephone/facsimile at the following address:
1, Wheaton Road
Witham,
Essex CM8 3TD
United Kingdom
Tel: +44-(0)1376 513833
Fax: +44-(0)1376 518247
© Electron Parametrics Ltd 2002. This document may be reproduced in whole or in part provided that this copyright notice is reproduced on each copy made.
All trade marks recognised.
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