(in top-level sip.conf)
[defaults](!) type=friend nat=yes qualify=on dtmfmode=rfc2833 disallow=all allow=alaw #include accounts/*/sip.conf
(in accounts/customer1/sip.conf)
[def-customer1](!,defaults) secret=this_is_not_secret context=from-customer1 callerid=Customer 1 <300> accountcode=0001 [phone1](def-customer1) mailbox=phone1@customer1 [phone2](def-customer1) mailbox=phone2@customer1
This example defines two phones - phone1 and phone2 with settings
inherited from "def-customer1". The "def-customer1" is a template that
inherits from "defaults", which also is a template.