Installation manual

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form the first three octets of a device MAC address. MAC address OUI numbers must
be configured in the Telephony OUI list so that the switch recognizes the traffic as
being from a VoIP device.
• 802.1ab – Uses LLDP to discover VoIP devices attached to the port. LLDP checks
that the “telephone bit” in the system capability TLV is turned on. See “Link Layer
Discovery Protocol” on page 3-207 for more information on LLDP.
• Priority – Defines a CoS priority for port traffic on the Voice VLAN. The priority of any
received VoIP packet is overwritten with the new priority when the Voice VLAN feature
is active for the port.
Web – Click QoS, VoIP Traffic Setting, Port Configuration. Set the mode for a VoIP traffic
port, select the detection mechanism to use, and specify the VoIP traffic priority. Click
Apply.
Figure 3-134 VoIP Traffic Port Configuration