LTPH-UM-1031-03, Issue 3 | Overview |
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OVERVIEW
The H4TU-C-319 List 1 is the Central Office (CO) side of a T1 transmission system. The ADC® four-wire HDSL2 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-319 List 1 is designed to mount in 3192 mechanics shelves. For a list of compatible shelves see “Appendix C - Compatibility” on page 65.
The H4TU-C-319 List 1 complies with the protection switching features of the PSC-606 List 1 protection switching card. See the PSC-606 List 1 technical practice, document number LTPH-TP-1006-xx for detailed information.
FEATURES
Standard features include:
•HDSL4 transmission features
—Lightning and power cross-protection on HDSL4 interfaces
—Full-duplex HDSL4 transmission on four wire at 1.568 Mbps
—Ultra-low wander (Stratum 1 compliant)
—Grounded loop detection on either HDSL4 spans
—Spectrum compatibility with Asymmetric Digital Subscriber Line (ADSL) services
—Bit Error Rate Tester (BERT)
—Three-span range with two doublers (34 kft, 26 AWG)
•Front-panel provisioning features
—Four-character status display
—DS1 splitting and bridging access
—Status Light Emitting Diode (LED)
—RS-232 craft port for connection to a maintenance terminal
—MODE and SEL pushbuttons
—Front-panel dual loopback commands
•Maintenance screens for inventory, provisioning, and troubleshooting
—DS1 and HDSL4 performance monitoring
—DS1 and HDSL4 alarm histories
—Payload (PL) and HDSL Generic (HG) loopback source identification
—Margin Alarm (MAL) threshold
—Report menu option for downloading status and performance monitoring data to a file
—Sources sealing current when connected to any locally powered H4TU-R-402
—Remote access and control of H4TU-R test signal generator
