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Background TIA TR-41.4: Engineering subcommittee in TIA, mandate for User Premises Telecommunications Requirements / IP Telephony Infrastructures LLDP-MED (ANSI/TIA-1057): VoIP-specific set of extensions to LLDP (IEEE 802.1AB), created by TR-41.4 Leverages LLDP’s excellent extensibility properties Defines several new TLVs (Type-Length-Value) for: LAN Policy (Diffserv, Layer 2 Priority, VLAN) Location Identification (IETF compatible civic and geo location, plus ELIN) Extended Power Over Ethernet Inventory management Also defines some new protocol behaviour (‘Fast Start’) and a few constrains on base LLDP |