the other parameters and the general disadvantage of not being familiar with the domestic business culture. Some parameters in Table I are related to district-heating sales. DH competitiveness includes the availability and price of other forms of heating, primarily natural gas. Customer relations concern customer attitudes toward district heating, customers' and suppliers' perceived insecurity whether they can establish and maintain relations, as well as if disconnections have occurred or may occur. Built environment relates to how common multi-family buildings are and if these have a central heating system for the whole house. Tabel Tabel . District heating value chain with heat production, distribution and sales in focus Table I ends with district-heating production and distribution issues. Biomass considers domestic biomass supplies and infrastructure for biomass fuel supply. Waste includes current waste
Token bus is token ring over a virtual ring on a coaxial cable. A token is passed around the network nodes and only the node possessing the token may transmit. If a node doesn't have anything to send, the token is passed on to the next node on the virtual ring. Each node must know the address of its neighbour in the ring, so a special protocol is needed to notify the other nodes of connections to, and disconnections from, the ring. 47. ARP vallaste.ee definitsioon: aadressiteisenduse protokoll Protokoll IP aadressi vastendamiseks arvuti füüsilisele ehk MAC-aadressile Etherneti kohtvõrgus (Etherneti-aadressile). Näiteks IP praegu kõige levinuma versiooni IP version 4 (IPv4) puhul on IP aadressi pikkus 32 bitti, aga Ethernet’i võrgus on seadmete aadresside pikkuseks 48 bitti . Seepärast peetakse ARP-puhvri nime all tuntud tabelit, mis seab omavahel vastavusse IP-aadressid ja MAC-aadressid
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