Overview; Features - ADC H4TU-C-388-L1 User Manual

LTPH-UM-1122-02, Issue 2
O
VERVIEW
The H4TU-C-388 List 1 is the Central Office (CO) side of a repeaterless T1 transmission system. The four-wire
HDSL4 product family (hereafter referred to as "HDSL4") is based on the HDSL4 standard ANSI T1.418 Issue 2.
The H4TU-C, when used with an H4TU-R remote unit, transmits a 1.544 Mbps payload up to a maximum distance
of 12 kft. over two unconditioned copper pairs. Using two doublers (H4Ds), the Carrier Service Area (CSA) reach
can be extended to a maximum of 34 kft.
The H4TU-C-388 List 1 is designed to mount in Double Dual Module Plus (DDM+) high-density shelves. For a
list of compatible shelves see
F
EATURES
The H4TU-C-388 List 1 line unit is the Central Office (CO) side of a T1 transmission system.
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HDSL4 transmission features
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Three-span range with two doublers (36 kft, 24 AWG)
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Lightning and power cross-protection on HDSL4 interfaces
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Full-duplex HDSL4 transmission on four wire at 1.568 Mbps
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Ultra-low wander (Stratum 1 compliant)
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Grounded loop detection on either HDSL4 spans
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Spectrum compatibility with Asymmetric Digital Subscriber Line (ADSL) services
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Bit Error Rate Tester (BERT)
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Front-panel provisioning features
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Four-character status display
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DS1 bridging access
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Status Light Emitting Diode (LED)
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RS-232 craft port for connection to a maintenance terminal
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MODE and SEL pushbuttons
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Front panel dual loopback commands
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Maintenance screens for inventory, provisioning, and troubleshooting
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DS1 and HDSL4 performance monitoring
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DS1 and HDSL4 alarm histories
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Payload (PL) and HDSL Generic (HG) loopback source identification
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Margin Alarm (MAL) threshold
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Report menu option for downloading status and performance monitoring data to a file
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Sources sealing current when connected to any locally powered H4TU-R-402
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Remote access and control of H4TU-R test signal generator
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Both doubler and non-doubler applications are compatible with ADSL services at same binder group
H4TU-C-388 List 1
"Appendix C - Compatibility" on page
September 12, 2003
66.

Overview

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