[asterisk-users] Does X100P decode caller ID?

[Yuan LIU]

>From: Leo Ann Boon <leo at datvoiz.com>
>>It is, and is identified by wcfxo as "a Wildcard FXO: Wildcard X100P".  So 
>>much for "The DigitNetworks X100P is detected as an actual X101P card."
>IIRC, there were 2 Digium single FXO cards - the X100P using the Motorola 
>SM56 and the X101P with Intel/Ambient 537. The X101Ps have 2 RJ-11 jacks. 
>Functionally, they're all Winmodems - effectively just DAAs connected to 
>the PCI bus. The Zaptel driver is responsible for the caller ID and DTMF 
>detection. Maybe you have a borked card or it could be due to impedance 
>mismatch. I know that the X101P only works with FCC 600 Ohm impedance. For 
>other parts of the world, YMMV.
>
>Leo

Is DTMF pass-through and caller ID fundamentally different?  This card does 
not seem to cause significant difficulty in DTMF detection.  The high DC 
voltage during ringing could be one factor.  Any easy way to test serious 
mismatch?  The 600 Ohm is actually on-hook resistance, right?  Or is this 
audio impedance?  The card is indeed sold and used in North America.

Yuan Liu