Siemens HIPATH 8000 - Manual (Page 40)

Technical Overview
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Using Vendor Classes
A "Vendor Class" is used to make sure that vendor-related information is
only sent to the telephones (instead of sending it to all other terminal de-
vices as well). By using a vendor class, vendor information elements for
each vendor class can be sent to all devices of this vendor class. The ven-
dor class name is either "OptiPoint" and/or "OptiIpPhone". optiPoint tele-
phones send their vendor class name using the option 60 to the DHCP
server whenever they request data from the DHCP server.
If the option "VLAN Discovery" is set to DHCP on the telephone, the tele-
phone registers using the vendor class name "optiPoint" during the initial
boot process, and then using the vendor class name "OptiIpPhone". On the
DHCP server, you can therefore use the vendor class name "optiPoint" to
assign the VLAN, and use the vendor class name "OptilpPhone" to assign
the DLS server address or the name. This enables a more specific config-
uration of the DHCP server.
The Authentication is done via digital Certificates. For detailed infor-
mationen refer to the IEEE 802.1x Configuration Management Ad-
ministration Guide.