Tham khảo tài liệu 'central office/customer premises enclosures', công nghệ thông tin, phần cứng phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Central Office Customer Premises Enclosures WorldDSL is ADC s line of high-speed HDSL access devices specifically designed for the diverse telecommunications needs of global markets. Ideal for telco and enterprise networks WorldDSL products comply with international standards to ensure compatibility performance and safety within your network environment. WorldDSL offers a variety of enclosures for use at the customer premises or central office. All WorldDSL enclosures will accommodate any of the LTUs or UTUs and are fully connectorized with the exception of the outdoor enclosure the ERE-826 which comes equipped with a 25 ft. cable stub. ERE-811 s or the ERE-821 are suitable for desktop use or can be wall mounted. ERE-811 L2 Small compact durable all metal enclosure with rubber desktop feet Wall mounting holes incorporated into metal enclosure Internal wide input range AC to -48VDC converter E1 connectors for both 120 Q balanced and 75 Q unbalanced 25-pin data port connector Alarm connector IEC 320 AC Inlet AC or DC or both for environments where DC backup is needed ERE-811 L4 ERE-811 L2 features without internal AC to DC converter Lower cost where -48VDC power is available Used with UTU-801 L4 extended temperature HDSL modem or any line-powered or DC-powered UTU ERE-821 ERE-821 provides connectors for each of the 2 card slots AC or DC or both for environments where DC backup is needed Dual internal AC to DC converter Priority switching module included ERE-826 Pole or manhole mounted outdoor enclosure Primary protection for both E1 and HDSL circuits Compatible with line-powered UTU-801 Gel-filled cable stub DC Ordering Information Model Part Number Card Capacity Description ERE-811 L2 ERE-811 L5 150-1411-02 150-1411-12 1- any LTU UTU NTU Internal AC to DC converter or DC power or both. ERE-811 L4 ERE-811 L7 150-1411-04 150-1411-14 1- any LTU UTU NTU DC power only - for use in DC environments with any plug-in module or for high temperature environments with the .
