Installation guide

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call-limit=1
mailbox=1000 ; Mailbox for message waiting indicator
context=sip
callerid="3001" <3001>
disallow=all
allow=ulaw
allow=g729
allow=g723.1
[fxo1]
type=friend
secret=1234
context=sip
disallow=all
allow=ulaw
allow=g729
allow=g723.1
dtmfmode=info
canreinvite=no
host=dynamic
defaultip=172.16.2.237
[fxo2]
type=friend
secret=1234
context=sip
disallow=all
allow=ulaw
allow=g729
allow=g723.1
dtmfmode=info
canreinvite=no
host=dynamic
defaultip=172.16.2.237