Yealink T46G Skype For Business Edition, Administrator'S Manual

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Yealink Skype for Business HD IP Phones Administrator Guide
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LLDP
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.
TLVs supported by the Skype for Business phone are summarized in the following table:
TLV Type TLV Name Description
Mandatory TLVs
Chassis ID The network address of the Skype for
Business phone.
Port ID The MAC address of the Skype for Business
phone.
Time To Live
Seconds until data unit expires.
The default value is 180s.
End of LLDPDU Marks end of LLDPDU.
Optional TLVs
System Name
Name assigned to the Skype for Business
phone.
The default value is “SIP-T46G”.
System Description
Description of the Skype for Business phone.
Description includes firmware version of the
Skype for Business phone.