====== SIP Trunk ======

===== Server A =====
<file - sip.conf>
[serverA]
type = peer
host = 192.168.1.101
username = serverB
secret = apples
context = incoming
disallow = all
allow = alaw
</file>
<file - extensions.conf>
exten => _5XXX,1,Dial(SIP/${EXTEN}@serverA)
</file>

===== Server B =====
<file - sip.conf>
[serverB]
type = peer
host = 192.168.1.102
username = serverA
secret = apples
context = incoming
disallow = all
allow = alaw
</file>
<file - extensions.conf>
exten => _6XXX,1,Dial(SIP/${EXTEN}@serverB)
</file>

===== Trunk s registrací =====
<file - sip.conf>
[general]
...
register => username:password@your.provider.tld
...

[myprovider]
type = peer
host = your.provider.tld
username = username
secret = password
; Most providers won't authenticate when they send calls to you,
; so you need this line to just accept their calls.
insecure = invite
dtmfmode = rfc2833
disallow = all
allow = alaw
</file>

<file - extensions.conf>
exten => _XXXXXXXXX,1,Dial(SIP/${EXTEN}@myprovider)
</file>

===== Šifrování hovorů (SIP TLS, SRTP) =====
FIXME str.150