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As of Release 1.1, 9600 Series IP Telephones can accommodate a Gigabit Ethernet (GigE) Adapter. Release 1.5 introduced the 9630G and 9640G IP Telephones, which contain a built-in gigabit Ethernet adapter. When connected to an adapter interface, the Gigabit Ethernet Adapter sets the Ethernet line interface operational mode that is built into the telephone to 1000Mbps full-duplex and deactivates the built-in secondary Ethernet interface. When a Gigabit Ethernet Adapter is present, any considerations or processing that apply to the "Ethernet line interface" apply only to the Ethernet line interface on that adapter. Likewise, any considerations or processing that apply to the "secondary Ethernet interface" apply only to the secondary Ethernet interface on the Gigabit Ethernet Adapter.
With an internal or connected Gigabit Ethernet Adapter, system parameters PHY1STAT (the Ethernet line interface) and PHY2STAT (the secondary Ethernet interface) activate the respective Ethernet interface in the 1000Mbps operational mode when supported by the hardware. When not supported by the hardware, the respective Ethernet interface is set to auto-negotiate the speed and duplex.
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