[general]
context=incoming   
allowguest=no      
allowoverlap=no                 
udpbindaddr=0.0.0.0 
tcpenable=no        
externip=X.X.X.X
disallow=all    
allow=ulaw,alaw 
dtmfmode=rfc2833
transport=udp
allowsubscribe=yes
notifyringing=yes
notifyhold=yes
limitonpeers=yes
defaultexpiry=300
allowtransfers=yes
autodomain=no
bindport=5060
bindaddr=0.0.0.0
callevents=yes
directrtpsetup=no
localnet=10.0.0.0/255.0.0.0
pedantic=yes
recordhistory=no
registerattempts=0
registertimeout=20
relaxdtmf=no
videosupport=yes
callcounter=yes
mohinterpret=cc
rtcachefriends=yes
realm=ru.ru
rtpkeepalive=15
t38pt_udptl = yes,redundancy,maxdatagram=849




...
[1890]
callerid = "dan" <1890>
canreinvite = no
context = internal
host = dynamic
nat = force_rport,comedia
qualify = yes
secret = heAs343fs
type = friend
allow = !all,opus,ulaw
cancallforward = yes
avpf = yes
directmedia = no
dtlsenable = yes
dtlsverify = fingerprint
dtlscertfile = /etc/asterisk/keys/cert.pem
dtlsprivatekey = /etc/asterisk/keys/privkey.pem
dtlssetup = actpass
encryption = yes
force_avp = yes
icesupport = yes
rtcp_mux = yes
transport = udp,ws,wss
...