User Manual

Setting Up Your System
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requirements regardless of their physical location can greatly simplify network design. VLANs
can address issues such as scalability, security and network management.
The purpose of VLAN configurations on the Skype for Business phone is to insert tag with VLAN
information to the packets generated by the Skype for Business phone. When VLAN is properly
configured for the ports (Internet port and PC port) on the Skype for Business phone, the Skype
for Business phone will tag all packets from these ports with the VLAN ID. The switch receives
and forwards the tagged packets to the corresponding VLAN according to the VLAN ID in the
tag as described in IEEE Std 802.3.
VLAN on Skype for Business phones allows simultaneous access for a regular PC. This feature
allows a PC to be daisy chained to a Skype for Business phone and the connection for both PC
and Skype for Business phone to be trunked through the same physical Ethernet cable.
In addition to manual configuration, the Skype for Business phone also supports automatic
discovery of VLAN via LLDP, CDP or DHCP. The assignment takes effect in this order: assignment
via LLDP/CDP, manual configuration, then assignment via DHCP.
For more information on VLAN, refer to VLAN Feature on Yealink Skype for Business phones .
LLDP (Linker Layer Discovery Protocol) is a vendor-neutral Link Layer protocol, which allows the
Skype for Business phone to receive and/or transmit device-related information from/to directly
connected devices on the network that are also using the protocol, and store the information
about other devices. LLDP transmits information as packets called LLDP Data Units (LLDPDUs).
An LLDPDU consists of a set of Type-Length-Value (TLV) elements, each of which contains a
particular type of information about the device or port transmitting it.
LLDP-MED (Media Endpoint Discovery)
LLDP-MED is published by the Telecommunications Industry Association (TIA). It is an extension
to LLDP that operates between endpoint devices and network connectivity devices. LLDP-MED
provides the following capabilities for the endpoint:
 Capabilities Discovery -- allows LLDP-MED endpoint to determine the capabilities that the
connected switch supports and has enabled.
 Network Policy -- provides voice VLAN configuration to notify the Skype for Business
phone which VLAN to use and QoS-related configuration for voice data. It provides a “plug
and play” network environment.
 Power Management -- provides information related to how the Skype for Business phone
is powered, power priority, and how much power the endpoint needs.
 Inventory Management -- provides a means to effectively manage the Skype for Business
phone and its attributes, such as model number, serial number and software revision.