[Asterisk-Users] FXO mode

[Andy Powell]

Can't find the message in a search.. but below is a msg retreved from my 
archive..

this is what Mark sent a little while ago....
I have no idea if it actually does anything to the card, but on a modprobe I 
do get a msg saying it's using CTR21

Andy

>
>I'm in Paris right now and can't test this change, but I've been
>researching the DAA and there are a few international settings I can
>change, so I've changed the driver in CVS so that you can specify
>the operational mode.  Try "modprobe wcfxo opermode=1" if you're in most
>of Europe and that should switch to CTR21 mode which slightly modifies a
>few of the electrical characteristics of the DAA.
>
>As we add modes you'll be able to see them with "modprobe wcfxo
>opermode=-1" and then doing a dmesg.
>
>Anyway all you folks that had some trouble like this try it out and let me
>know if it makes any difference.
>
>Mark
>
>_______________________________________________
>Asterisk-Users mailing list
>Asterisk-Users at lists.digium.com
>http://lists.digium.com/mailman/listinfo/asterisk-users
>



*********** REPLY SEPARATOR  ***********

On 14/08/2003 at 20:48 Richard Scobie wrote:

>Andy Powell wrote:
>>>>FCC mode is for the US. CTR21 is for Europe - you even pasted the info
>>>>in your message!
>>>
>>>Exactly, the question really is how do you change it? 
>>>
>> 
>> 
>> 
>>  modprobe wcfxo opermode=1
>> 
>>  HTH
>> 
>> Andy
>> 
>
>This switch (opermode=1) is redundant with the current X100P cards, as 
>it changes register contents that are specific to the "Global" version 
>of the chipset on the card.
>
>The X100P currently out there uses the "USA & Japan" chipset, and thus 
>does not achieve the intended result.
>
>The register concerned deals with the impedance presented to the line 
>connected to the card - 600 ohms (US) vs various complex impedances used 
>in other countries.
>
>For internationalised FXO cards, see Mark's recent comments, in the 
>thread "Does Wildcard x100p support BT Caller ID in UK?"
>
>Regards,
>
>Richard
>
>_______________________________________________
>Asterisk-Users mailing list
>Asterisk-Users at lists.digium.com
>http://lists.digium.com/mailman/listinfo/asterisk-users