DETEWE OpenCom 130 User Manual page 137

PBX Networking
With closed numbering, the OpenCom 100 determines which route to seize from
the telephone number dialled. The information needed for routing a call can be
configured in a numbering table containing up to 100 entries. You use this table to
assign telephone numbers 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 unassigned numbers. In particular, this simplifies configuration of
the OpenCom 100 as a subsidiary system: the only entry you assign to the default
entry is the route to the host system
PBX PBX
c e
d
100-199 200-299
3: e
4: b
b h
5: h
D: c
a g
D: d
PBX PBX
i
400-499 500-599
3: i
D: a
D: g
Example of closed numbering tables
The automatic switching of call requests (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.
PBX
f
300-399
5: k
k
D: f
D:Default
Route
Configuration
135