[Asterisk-Users] Measure the Signal of Zap

[Leandro Morgado]

Damian Minkov wrote:

> Is there a way to measure the signal of the connected line on the FXO 
> port ( without the help of digital oscilloscope )
>
Yes there is. But you need to edit the source code of wcfxs (for the 
TDM400 card). There is a bit of code similar to:

#if 0
-->some debug messages here regarding voltage values
#endif

You can simply replace it for

a) if 1
This will always print out voltage values... LOTS of them!

or

b) if (debug>1) {....}
This will print out voltage values when you "modprobe wcfxs.c debug=2"

There should be similar bits of code in the X100P driver.

Leandro