Technical Details - DETEWE OpenCom 130 Mounting And Commissioning Manual

ing the route. You can also configure
whether a user is authorised to seize
a particular route, whether LCR is to
be used for one of the trunk groups
and the criteria (business or private
call, booking numbers) for evaluat-
ing call data.
Numbering
A user can seize a particular route by
pre-dialling a specific code digit.
With this "open numbering", a user
must always dial this code digit and
then the telephone number in order
to reach a party in another PBX.
If none of the telephone numbers in
your PBX network occur twice, you
can also configure "closed number-
ing", allowing the same telephone
number to be used for reaching each
user within the PBX network.
With closed numbering, the
OpenCom 130 determines which
route to seize from the telephone
number dialled. The information
needed for routing a call can be con-
figured in a numbering table con-
taining up to 100 entries. You use
this table to assign telephone num-
bers and/or ranges of telephone
numbers to a particular route.
A default entry in the numbering
table makes it possible to seize a
"default route" for all remaining un-
assigned numbers. In particular, this
simplifies configuration of the
OpenCom 130 as a subsidiary sys-
tem: the only entry you assign to the
PBX Networking
default entry is the route to the host
system
PBX PBX
c
d
100-199 200-299
4: b
b h
D: c
a g
PBX PBX
400-499 500-599
D: a
Example of closed numbering tables
The automatic switching of call re-
quests (i.e. routing) by means of
trunk group overflow or default
numbering can lead to "circular
switching".
To avoid this, a "transit" counter is
incremented whenever a connection
is switched through on Q.SIG lines.
When the configured maximum
value is reached, further switching
stops.

Technical Details

A different PBX number must be set
for each OpenCom 130 in a PBX net-
work. This setting can be found in
the Web console, in the menu
PBX Configuration: System under
the heading System linking. You can
also set the maximum value for the
transit counter there. This value de-
pends on the topology of the PBX
network and should allow the sys-
tem to have the maximum number
of further connections possible.
PBX Networking
PBX
e
f
300-399
3: e
5: k
k
5: h
D: f
D: d
i
3: i D:Default
D: g Route
83