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This document discusses the various environments and situations where you can use the Elite Gateway* Desktop Version
Application A: FXS
Application A has two possible connections. The A-1 shows the connection between the gateway and telephone set (POTS) or FAX machine. The FXS module is used in the A-1 connection. The A-2 connection is used to connect the gateway and PBX that has the CO trunk interface. FXS is also used in this connection. The telephone sets connected to PBX can be either POTS or digital telephone depending upon the PBX capability.
Application B: FXS / FXO combination
Application B has three possible connections. The B-1 connection is a normal trunk connection between the CO switch and PBX. The B-2 connection is identical to the A-1 connection mentioned in Application A. The B-3 connection is used to connect the PBX and gateway through the internal analog lines provided by the PBX. In this case, the FXO module has to be used, and the FXO ports will serve the same roles as the analog telephone sets.
Note: If the PBX used in the B-3 connection is a digital type, an analog terminal adapter is needed to provide an analog interface to the FXO module.
In this application, the caller on the B-2 connection can use the Gateway through its FXS module to communicate with the party on the other end in the B-3 connection. The phone call is forwarded through the FXS module in the B-2 Gateway and is received by the FXO module in the B-3 gateway, which is connected to the PBX, which will then switch to the dedicated terminal.
The same caller can also use the feature that the Gateway provides to redial the local number through the PBX, to the public switch, in order to reach the person inside the region that the public switch serves.
This applies to:
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