The chipset used in the X100P - at least the one I have - is designed for the US/Japan market only. The reference design in the datasheet for the chipset does not include facilities for the detection of line voltage reversal. Hence the only way to detect caller ID sent before ringing would be to constantly scan for it - wasteful in processor resources.
There is another chipset in the same family that supports full international operation. The datasheet for this describes a procedure for detecting line voltage reversals and capturing caller ID. I guess we need Digium to look into an international version of the X100P based on this chipset.
Iain
--On Saturday, August 09, 2003 19:39:07 +0200 Andy Powell <[EMAIL PROTECTED]> wrote:
Mark,
if the capability for line reversal detection is in the hardware (X100P) then does this mean that the detection of DTMF style caller-id as used in the following countries would ber trivial? or am I hoping too much...
Finland, Denmark, Iceland, the Netherlands,India, Belgium, Sweden, Brazil, Saudi Arabia, Uruguay and Japan
Imagine all those happy people!!
Andy
On 09/08/2003 at 10:44 Mark Spencer wrote:
Maybe you could open a bug for it, and attach the specs / a link to those specs? Also, I suggest you reply to this message:
That's a great idea. The other thing is that we have to detect polarity reversal or we'll constantly be scanning for CID.
Mark
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