VoIP Phones - FireBrick

Create the General VoIP config:

<voip comment="AAISP">

Create a Carrier:

<carrier name="AAISP" display-name="Office" allow="81.187.30.110-119 2001:8b0::/48" registrar="voiceless.aa.net.uk" username="0123456789" password="secret" extn="100" max-calls="2" comment="Office 0123456789"/>