<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div>Hi list<br><br>First of all could you please explain loop-start and ground-start for me? What are they used for?<br><br>Next, I have the following configurations:<br><br><br><br>dahdi-channels.conf :<br><br> context=pstn-channels<br> signalling=fxs_ks<br> channel=>130<br> context=phone-channels<br> signalling=fxo_ks<br> channel=>127<br><br>chan_dahdi.conf :<br><br> [channels]<br> cidsignalling=dtmf<br> cidstart=dtmf<br><br> signalling=fxo_ls<br> pulsedial=no<br> usecallerid=yes<br> context=pstn-channels<br> channel=>130<br> <br> signalling=fxs_ls<br> context=phone-channels<br> channel=>127<br><br>extensions.conf :<br><br> [pstn-channels]<br> exten=>_.,1,Dial(DAHDI/127/${EXTEN})<br><br> [phone-channels]<br> exten=>_.,1,Dial(DAHDI/130/${EXTEN})<br><br>/dahdi/system.conf<br> fxoks=125-128<br>
 fxsks=129-132<br><br>I can hear the dial tone from the phone with these configurations. As soon as I comment "signalling" type in chan_dahdi.conf, dial tone comes up. What's the problem with these configurations?<br><br></div></div></body></html>