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Smooth Scaling---Analog/digital PABX transform to IP Networks

IP-PBX or enterpriseed communicationsystem with IP external line access cannot access the analog external linebecause there is no analog interface.

By using an FXO gateway, the FXO port isconnected to the PSTN external line and the IP side is connected to the OMIP-PBX, the problem of access the PSTN line can be solved in a low cost way



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