Panasonic KX-NS500 Installation Manual page 172

4.11.1 LAN Connection for the Main Unit
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The CTI server can be used for connecting PCs on a LAN to provide third party call control CTI.
CTI connection uses the CSTA Phase 3 or TAPI 2.1 protocol. The operating system of the PC or CTI
server required for third party call control depends on your CTI application software. For details, refer
to the manual for your CTI application software.
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When using the VLAN feature on the network, make sure that the PBX is connected to a layer 2 switch
that is IEEE 802.1Q compliant, and that is configured for VLANs. In addition, the port of the switching
hub to which the PBX is connected must be set to "Untagged". Consult your network administrator for
details.
172 Installation Manual