[Asterisk-Users] Asterisk - fax - spandsp

[Steve Underwood]

Hi Jean-Yves,

As a new topic it would have been nicer to everyone to start a new thread.

Are you talking about sending or receiving faxes?

txfax can insert a header on each page when it sends a fax. There is a 
parameter for that.

When a fax is received the header you see is part of the image. As such, 
it ends up in the TIFF file as part of the image. It is not available as 
text anywhere. The only way to make it available as text would be to 
implement OCR. That is complex and messy, and I have no intention to 
try. The only information sent between the FAX machines as text is the 
"identifier" - a 20 character string, which the standard says should be 
digits, and which is usually set to the telephone number of the FAX machine.

Regards,
Steve


Jean-Yves Avenard wrote:

>
> On 16/05/2005, at 11:48 PM, Steve Underwood wrote:
>
>> How can that work? You can measure the error, but you have no ability 
>> to tweak the clock from software. Two cards could only be synced by 
>> hardware.
>
>
> Side questions about spandsp... Is it possible to print the fax header 
> like what most faxes do (that is: who is sending the fax, how many 
> pages are included etc...) I'm not talking about printing callerid, 
> often I receive fax from the US (and there's no CallerID being 
> displayed then) but my fax machine can print the fax header very well.
>
> Jean-Yves