3Com OCG VOICE EXPANSION -, User Manual

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OfficeConnect Gateway Integration with an NBX system or
traditional PBX/Key system
The OfficeConnect Gateway can easily be integrated with a 3Com NBX
25 Communications system or traditional PBX/Key system. The 3Com
NBX 25 communications system’s analog ports are plugged into the four
FXS ports of the OfficeConnect Gateway base unit. By combining these
systems, users have access to toll-quality voice services as well as the
feature-rich call processing function of the NBX system. The
OfficeConnect Gateway works similarly with either a PBX or Key system.
The following illustration shows an implementation to support an NBX
system.