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LTPH-UM-1031-03, Issue 3
O
VERVIEW
The H4TU-C-319 List 1 is the Central Office (CO) side of a T1 transmission system. The ADC
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
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.
F
EATURES
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
H4TU-C-319 List 1
"Appendix C - Compatibility" on page
September 12, 2003
®
four-wire HDSL2
65.
Overview
1
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