Multitech CF100FX2-G User's Guide download pdf (Page 19)

Chapter 4: Wireless CallFinder Application Options

Multi-Tech Systems, Inc. CallFinder GSM Cellular Gateway 19

Connection Situation #3: CF100 to Analog Station Port on PBX

Caution: When connecting a CF100 CallFinder to an analog station port and allowing incoming calls

through that CallFinder, the PBX must be configured to prevent the incoming caller from using

the CallFinder’s secondary dial tone to make calls to a third party. Such ‘call-through’ activity

could be expensive to the PBX owner. The secondary dial tone is intended to allow the outside

party to reach any extension on the PBX. However, without limitations on dialing at the

secondary dial tone, an unscrupulous caller could make toll calls (perhaps very expensive

calls) that would be charged to the PBX.

1. Set CallFinder’s Interface to FXO. Use HyperTerminal (or other communications program) to check the

current Interface setting, to change the Interface to FXO if necessary, and to confirm that change.

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Multitech CF100FX2-G User's Guide Page 19