Technical Details - Aastra OpenCom 100 Series Mounting And Commissioning User Manual

PBX Networking
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 bundle 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 100 in a PBX network. This
setting can be found in the Web console, in the menu Telephony: Settings under the
heading QSIG linking. You can also set the maximum value for the transit counter
there. This value depends on the topology of the PBX network and should allow the
system to have the maximum number of further connections possible.
You can display the connection status of the lines at any time in the Configurator
menu System Info: Telephony: Trunks. You should check this in particular after
making changes to a configuration to see whether all the lines used for system net-
working are operable.
Some of the features possible in Q.SIG are not supported by OpenCom 100 with all
their options, for example callback on busy within the Q.SIG network. The call cate-
gories defined in Q.SIG (e.g. Emergency Call, Operator, Normal) and the Q.SIG name
transmission feature ("user names") are fully supported.
The code digits to be used for seizing a route with open numbering are not trans-
mitted to the destination PBX and thus cannot be evaluated by it. To reseize a route
(for example for a callback), you must set the appropriate digit prefixes in the bundle
configuration for the routes to be reseized.
168
PBX
f
300-399
5: k
k
D: f
D:Default
Route