I'm not sure whether "traffic relationship" is the correct name for it or not.
I'll try to describe it.
An index in users/extensions and trunks is neccessary.
e.g. I'll put index 100 to exten's 100...199
and index 200 to enten's 200...299 and so on.
Then I'll put index 100 also to ZAP/SIP trunk 1
and index 200 to ZAP/SIP trunk 2 and so on.
The next step is to create a matrix in which I define
which index to which other index can make a call.
For example:
to 100 to 200 to 300 to 400
from 100 x yes yes no
from 200 no x no no
from 300 no yes x no
from 400 yes yes yes x
A function like this is usefull if you want to forbid
calls from one index group to another including the
corresponding trunk.
Or you want to allow only calls inside an index group
but a special index group should be allowed to call any
other index group too.
In professional environments this is used to isolate
companies against each other which are all hosted on
one PBX.
Greets Wanninger
