Something
public text v1 · immutable[trunkgroups]
[channels]
usecallerid = yes
cidsignalling = dtmf
hidecallerid = no
usecallingpres = yes
echocancel = yes
echocancelwhenbridged = yes
busydetect = yes
busycount = 5
immediate = no
callerid="3561867" <3561867>
context = telefonski_aparat
signalling = fxo_ks
channel => 1
callerid=asreceived
context = telefonska_linija
signalling = fxs_ks
channel => 2