on host1 called baylink

[kiix-iax]
fromuser=baylink-iax
username=baylink-iax
type=friend
secret=7e980fde01
host=host2.domain.tld
trunk=yes
context=from-trunk-iax2-kiix-iax
qualify=yes
auth=md5
disallow=all
allow=ulaw


[general]
register => baylink-iax:7e980fde01@host2.domain.tld

on host2 (called kiix)

[baylink-iax]
context=trunk-baylink-iax-custom
secret=7e980fde01
host=host1.domain.tld
accountcode=baylink
auth=md5
fromuser=kiix-iax
username=kiix-iax
type=friend
trunk=yes
qualify=yes
disallow=all
allow=ulaw