session-timers=accept
session-expires=10800
session-minse=90
session-refresher=uas

t38pt_udptl = yes

nat = no

directrtpsetup=no
directmedia=no
directmediadeny=0.0.0.0/0
canreinvite=no

[in.from.a]
directmedia=no
type=user
nat=yes
t38pt_udptl=yes
t38pt_rtp=yes
t38pt_tcp=no
disallow=all
allow=alaw
rtptimeout=30
encryption=no
context=in.from.in.from.a

[out.to.b]
directmedia=no
type=peer
nat=no
t38pt_udptl=yes
t38pt_rtp=yes
t38pt_tcp=no
disallow=all
allow=alaw
dtmfmode=rfc2833
host=33.55.77.99