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H2TU-C-231 L The H2TU-C-231 List 7F line unit is the Central Office (CO) side of a T1 transmission system. The H2TU-C, when used with an H2TU-R remote unit, transmits a 1.544 Mbps payload on one unconditioned copper pair over the full Carrier Service Area (CSA) range. The H2TU-C-231 List 7F is designed to mount in 220 mechanics shelves.
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Select Config, Date and Time, then type the date and time. Select Inventory, then type the unit ID numbers. Change the settings of any system parameters, if necessary, by selecting Config, then Standard Options or ADC Options (see Table 3 Table 4 inside).
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Table 1. Front-Panel Alarm Messages Message Description PWR FEED SHRT A short between the Tip and Ring of the HDSL2 pair. PWR FEED GND The HDSL2 loop is grounded. PWR FEED OPEN A line-power open condition. LOSW The HDSL2 loop has lost synchronization. LLOS No signal is detected at the DSX-1 input to the H2TU-C.
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DSX-1 output ports to the cross-connect panel must be grounded at both ends. Copies of this publication or the user manual (LTPH-UM-1215-xx) can be downloaded from the ADC website at www.adc.com. To order a hard copy, please contact your sales representative.
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