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STP  是線對屏蔽,好像不是雙層屏蔽呀?

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HS----數(shù)字通信用水平對絞電纜

Y------PE

Z-----低煙無鹵外被    確認(rèn)你那個2還是Z

T-----應(yīng)該說的是雙層屏蔽,在標(biāo)準(zhǔn)里面屏蔽表示為P

6------6類線

說的是STP 6類

詳見標(biāo)準(zhǔn):TD/T 1019-2001 4.產(chǎn)品分類