[channels]

callerid=asreceived
usecallerid=yes

signalling=fxo_ks
language=en
context=dial-in
channel => 1

signalling=fxo_ks
language=en
context=default
channel => 2

signalling=fxs_ks
language=en
context=dial-in
channel => 3

signalling=fxs_ks
language=en
context=incomming
channel => 4