[Asterisk-Users] wctdm fxs ring frequency

[Tim Robbins]

Robert Webb wrote:
>>>  I have searched the list and the wiki and have seen references to
>>>changing this in the wcfxs.c file but I am not using that. Likewise,
> 
> I
> 
>>>have not founf anything in by looking into the wctdm.c file. I am no
>>>programmer but can somewhat follow the code.
>>
>>This is one of the best kept secrets of zaptel.
>>
>>In wcfxs.c a number has to be changed. What I used for 25 hz here in
>>France is this
>>
>>{20,"RING_OSC",0x7E6C}, // new value for 25hz
>>//{20,"RING_OSC",0x7EF0}, ; <--- old commented out
>>
>>I think this is on a bug report but should be published somewhere.
>>Maybe it is on the wiki by now.
>>
>>hth
> 
> 
> 
> I saw that in the code and thought that might be the place to change it.
> But is there abyway you can describe the setup of the code to calculate
> the frequency one wants?? 
> 
> I see you changed the value from 0x7EF0 to 0x7E6C but cannot figure out
> the calculation.

Check page 37 of the Si3210/Si3211 data sheet, available here:
http://www2.silabs.com/public/documents/tpub_doc/dsheet/Wireline/ProSLIC/en/si3210.pdf


Tim