OSI bô͘-hêng

OSI bô͘-hêng (Eng-gí: OSI model) sī Khai-hòng Hē-thóng Sio-liân-chiap bô͘-hêng (Open Systems Interconnection model) ê kán-lio̍k, che sī chi̍t khoán kā tiān-sìn ia̍h tiān-náu hē-thóng ê thong-sìn khang-khòe piau-chún-hòa kiam pâi-pia̍t sèng-chit ê khài-liām bô͘-hêng.

OSI chân-chhù

Siū kí-kiàn ê X.200 phiau-chún kì-su̍t 7 têng ê chân-chhù (layer), siat hō-bé 1 kàu 7. Chân-chhù 1 sī bô͘-hêng tang-tiong siāng ē-té chân--ê.

OSI Bô͘-hêng
Chân-chhù		Protocol chu-liāu tan-goân (PDU)	Lō͘-iōng^[1]
Chú-ki chân-chhù (Host layers)	7. Èng-iōng (Application)	Data	Ko-chân API, hâm chu-goân kong-ke, hn̄g-lō͘ tóng-àn chhú-iōng
	6. Piáu-hiān (Presentation)		Tī bāng-lō͘ ho̍k-bū kap chi̍t hāng èng-iōng chi kan hoan-e̍k chu-liāu; hâm bûn-jī pian-bé (character encoding), chu-liāu ji̍h-cha̍t (data compression) kap pian-àm-bé/kái-àm-bé
	5. Session		Koán-lí thong-sìn session, i.e. nn̄g-ê tiám chi kan lâi-hôe chē pái thoân-sàng ê liân-sio̍k ê chu-sìn kau-ōaⁿ
	4. Choán-sàng (Transport)	Segment, Datagram	Bāng-lō͘ lāi kok tiám chi kan thang sìn-lōa ê chu-liāu chhia-tōaⁿ, hâm chhiat-tōaⁿ (segmentation), acknowledgement kap multiplexing
Mûi-thé chân-chhù (Media layers)	3. Bāng-lō͘ (Network)	Packet	Kò͘-chō-hòa kap koán-lí chi̍t-ê to-tiám (multi-node) bāng-lō͘, hâm addressing, routing kap traffic control
	2. Chu-liāu liân-kiat (Data link)	Frame	Keng-kòe bu̍t-lí chân-chhù sio-chiap ê nn̄g tiám chi kan khó-i-lōa ê chu-liāu
	1. Bu̍t-lí (Physical)	Symbol	Keng-kòe chi̍t-ê bu̍t-lí mûi-thé thoân-sàng kap chiap-siū chhiⁿ ê bit liû-súi

Chham-chiàu

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