static friend config (192.168.192.74):
[iax2testprotocol]
type            =  friend
requirecalltoken =  no
username        =  iax2testprotocol
secret          =  scrubbed
host            =  192.168.192.1
dtmfmode        =  auto
transfer        =  no
encryption      =  no
qualify         =  300
disallow        =  all
allow           =  ulaw
allow           =  g729
allow           =  gsm
accountcode     =  default
amaflags        =  default
context         =  all-iax2testprotocol-incoming

Dynamic friend config (192.168.192.1):
[iax2testprotocol]
type            =  friend
requirecalltoken =  no
username        =  iax2testprotocol
secret          =  scrubbed
host            =  dynamic
dtmfmode        =  auto
transfer        =  no
encryption      =  no
qualify         =  300
disallow        =  all
allow           =  ulaw
allow           =  gsm
accountcode     =  default
amaflags        =  default
context         =  commzilla-iax2testprotocol-incoming