INSTALLATION MANUAL
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7.7
Connection examples
Before studying how to make use of the OAM tabs to set up routing rules, it is useful to review
the possible modes of using Voxell LCR together with a PABX private exchange.
In the following pages there are shown a few examples of interconnecting the Voxell LCR
equipment.
7.7.1 LCR connected on its FXO interface to a subscriber interface of PABX.
The typical application in a company that has a private branch exchange.
The FXO connector of the Topex box is linked to a FXS junction of the PABX, another trunk of
the PABX goes to the public network, and FXS port of the equipment may be linked to an analog
fixed phone.
Outgoing from PABX
If the call is to mobile network, the PABX routes it to through the TOPEX Voxell LCR unit.
The numbering is sent through the junction of the PBX to the FXO connector of the Voxell LCR
interface. Voxell LCR may performs or not further routing. The call will be routed according to the
number dialed to the respective mobile operator
If the number dialed is for the public LCR network, the PABX routes it through trunk
connected directly to the public network, by-passing the Voxell LCR unit.
Outgoing from telephone
If your call is to mobile network, Voxell LCR routes it via its mobile module. If the call is to
PSTN or other networks, the toper box routes it through trunk connected it to the PABX.
Incoming from GSM to PABX
From the 2G/3G network an incoming call will be forwarded either to the FXS interface with
the analog phone or to the FXO interface connected to the PBX. The decision is taken depending
upon the CLIP GSM table. If the incoming phone number is not found in the table, decision is taken
depending on routes from the GSM module. The options involved are DISA and the Target settings
(from the CLIP table or from the GSM settings).
The destination of the call will be a specific local extension of the PABX or the operator of
the exchange.