User guide

Chapter 4: Wireless CallFinder Application Options
Multi-Tech Systems, Inc. CallFinder GSM Cellular Gateway 20
2. Connect Cables. Identify the PBX station port to be used and connect an RJ11-to-RJ11 cable between the
PBX station port and the CF100 FXO port.
Cellular Network
CF100
FXO
Wireless
CallFinder
IP Phone
Analog
CO/Line
Ports
Analog
Station
Ports
(1-4)
Ethernet Port
1
2
3
4
1
2
3
4
Ext 203
Analog Phone
Ext 3009
PBX
2nd Party Phone
3. Configuring PBX software for Outbound Calling through CallFinder. Any user of the PBX (whether that user
is on an analog station port or is connected via Ethernet to an IP phone) can call the analog station port to
which the CF100 is connected (“ext 204” in our example) and get a secondary dial tone from the CallFinder.
This secondary dial tone gives PBX users access to the wireless network. They simply dial 204 and the
CallFinder produces the secondary dial tone.
To set up the PBX software for this equipment configuration, follow the sub-steps below.
3A. In the PBX software, select the extension (station port) to which the CF100 is attached.
3B. In the PBX software, select the ‘User’ identifier of the CF100 (in our example, it’s “Ext204”).
3C. In the PBX software, disable voicemail for the extension used by the CallFinder.
4. Configuring the PBX software for Inbound Calling through CallFinder. Restrictions must be placed on the
inbound callers’ use of the secondary dial tone given to them by the CF100. The restrictions must prevent
the inbound caller from making toll calls billable to the PBX.
The most straightforward way to prevent such piracy of phone services is to block the incoming caller from
using, as initial dialed digits, the outbound access digits that would be needed to re-dial outward (for
example, 8, 9, and 1).