应该是UL444，
该标准包括以下一些CCN
<style>.O {color:black; font-size:149%;}a:link {color:red !important;}a:active {color:#FFCF01 !important;}a:visited {color:#3333CC !important;}</style><style media="print"></style><div v:shape="_x0000_s1026" class="O"><div style="">nListed as a Communication Cable (DUZX)</div><div style="">nListed as a Communication Cable + Verified to UL Performance Category Program Category 2, 3, 4, 5, 5E, 6 or 6A (DUZX)</div><div style="">nListed as a Communication Cable + Verified by UL in Accordance with other Industry Performance Standards  (DUZX )</div><div style="">nListed as a Communication Cable + Verified to UL Performance Category Program Category 2, 3, 4, 5, 5E, 6 or 6A + Verified by UL in Accordance with other Industry Performance Standards  (DUZX )</div><div style="">nVerified by UL in Accordance with other Industry Performance Standards (DVBI )</div><div style="">nListed as a Limited Combustible Cable (OWKZ )</div><div style=""></div></div>，

UL LISTED(DUZX)
范围是
额定温度在60 – 250℃（140 -182℉）多芯线缆，用于电话或其它通讯用途，如
语音或数字传输。包括：
MPP (multipurpose plenum cable)
CMP (communications plenum cable)
MPR (multipurpose riser cable)
CMR (communications riser cable)
MP (multipurpose cable for other than plenum and riser uses)
CM (communications cable for other than plenum and riser uses)
CMG (communications cable for other than plenum and riser uses)
MPG (communications cable for other than plenum and riser uses)
Cross-Connect Wire (communications cable for cross-connecting
telephone equipment)
CMX (communications cable for limited use)
CMUC (communications cable for under-carpet use)

UL VERIFIED (DUZX)
范围是
100ohm 对绞数据传输线。UL CAT.线既考察电线的传输性能,也包括常规的跟踪检验
性能测试.产品是否最终满足某一数据系统的使用要求,是由系统设计人员确定的，考虑
的因素有：电线长度、被连接的设备及工作环境等。
包括CAT.1,CAT.2,CAT.3,CAT.4,CAT.5,CAT.5E,CAT.6

UL444