First of all could you please explain loop-start and ground-start for me? What are they used for?
Next, I have the following configurations:
context=pstn-channels signalling=fxs_ks channel=>130
context=phone-channels signalling=fxo_ks channel=>127
signalling=fxo_ls pulsedial=no usecallerid=yes context=pstn-channels channel=>130
signalling=fxs_ls context=phone-channels channel=>127
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?