RE: Minibox caller id

[Stuart Poulton <swp@xxxxxxx>]

Hi All,

> I haven't taken a Meteor apart, but browsing around the RS site (sad I= know)
> there are a load of caller ID chips all around =A35 which makes me won= der why the
> Meteor is so bloody expensive!

Meteor uses the NPC  SM8220P chip, data sheet here :

http://ww= w.gadgeteer.org.uk/xAP/SM8220-1_Nc9508de.pdf

This is a discontinued chip from the manufacturer, however the AudioLine 55 i believe uses the SM8221P chip, which is the 8pin verision of the
above, I've not yet however had chance to interface to the AudioLine unit <= BR> as this requires opto-isolationdue to grounding issues with the phoneline.<= BR>
As for the meteor cost, BABT approval dosn't come cheap, which is what I suupect makes the cost relatively high.

Stuart

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