152-388-100-02, Issue 2 Overview
H2TU-C-388 List 1 June 6, 2000 1
OVERVIEW
The HiGain
®
product family from ADC
®
is the industry’s first practical implementations of High- bit-rate Digital
Subscriber Line 2 (HDSL2). ADC products are fully compliant with the HDSL2 standard. Providing full-rate T1
access using just a single copper pair, HDSL2 is a cost-effective solution that offers an open architecture. The open
architecture inherent in HDSL2 guarantees interoperability, allowing simple and economic accommodation of
network growth. HiGain uses the industry’s first HDSL2 chipset (ANSI T1/E1.4 compliant) developed by ADC.
HiGain HDSL2 products provide 1.552 Mbps transmission on one unconditioned copper pair over the full Carrier
Service Area (CSA) range. The CSA includes loops up to 12,000 feet of 24 American Wire Gauge (AWG) wire
or 9,000 feet of 26 AWG wire, including bridged taps.
FEATURES
The HiGain Line Unit line unit is the Central Office (CO) side of a T1 transmission system.
• HDSL2 transmission features
– Lightning and power cross-protection on HDSL2 interfaces
– Full duplex HDSL2 transmission on one pair at 1.552 Mbps
– Ultra-low wander (Stratum 1 compliant)
– Grounded loop detection on High bit-rate Digital Subscriber Line 2 (HDSL2)
• Front-panel provisioning features
– Four-character status display
– Status Light Emitting Diodes (LEDs)
– Bantam 210 jack port for RS-232 connection to a maintenance terminal
– MODE and SEL switches
• HiGain HDSL2 maintenance screens for inventory, provisioning, and troubleshooting
– DS1 and HDSL2 performance monitoring
– Non-volatile alarm histories
• Configuration options
– Selectable DS1 pre-equalizer
– Bipolar Violation Transparency (BPVT) options
– Bit Error Rate (BER) alarm
– Loss of Signal/Alarm Indicator Signal (LOS/AIS) payload alarm option
– Remote provisioning
– Selectable loopback activation codes
• Compatible with Double Dual Module Plus (DDM+) high-density shelves
• Payload (PL) and HiGain Generic (HG) loopback source identification
• Network Management and Administration (NMA) interface
• Margin Alarm (MAL) alarm
