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T1 HDSL 4-Wire Transceiver (T1HD4-XCVR)
The T1 HDSL 4-Wire Transceiver (T1HD4-XCVR) plug-in card functions as an inter-terminal transport or service card. The card supports HDSL4 functionality and provides a longer reach and improved spectral compatibility with other xDSL services than conventional HDSL cards provide. The T1HD4-XCVR card provides a single T1 rate interface up to 45 kft over repeatered #24 AWG copper facilities.

Features and Benefits

  • Operates as H4TU-C or H4TU-R
  • Dual memory support for upgrades
  • Interoperable with the T1X-XCVR card when an H4TU-C or H4TU-R is used
  • Compatible with other standards-based HDSL4 products
  • Line-powering capability
  • Up to 45 kft repeatered T1 transmission on #24 AWG copper facilities
  • Up to 32 kft repeatered T1 transmission on #26 AWG copper facilities
  • Capacity for to power two line powered ADTRAN range extenders
  • Support Inverse Multiplexing over ATM with Tellabs 1000 MSAP IMA card
  • Intact asynchronous T1 delivery capability
  • Synchronous T1 delivery capability
  • AMI/ZCS and B8ZS line coding
  • SF, ESF, Unframed, and Auto framing formats
  • Functions as an inter-terminal transport or service card
  • Supports HDSL4 functionality defined in ANSI T1.418, Issue 2
  • One HDSL4 T1 (1.544-Mbps) interface per card
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Included Highlights

Two Copper Wire Pairs

The T1HD4-XCVR card performs signaling conversion and datalink termination. The card uses two copper wire pairs for signal transmission with each pair running at half the HDSL4 data rate. Each copper wire pair provides bidirectional transmission. Pin pair 2 carries DS0s 1–12; pin pair 5 carries DS0s 13–24.

Interoperability

As an inter-terminal transport, the T1HD4-XCVR links two Tellabs 1000 terminals via a T1 span. The T1HD4-XCVR inter-operates with ADTRAN-compatible HDSL4 products. The T1HD4-XCVR card only supports H4TU-R and H4TU-C from ADTRAN, and is not end-to-end interoperable with PairGain/ADC equipment.

Transport and Service

The T1HD4-XCVR card supports inter-terminal transport, intact (asynchronous) T1 service and groomed T1 service

Loopback Testing

The T1HD4-XCVR card supports extensive loopback diagnostics, including command-initiated loopbacks from the CLI when provisioned for service, inband loopbacks, Facility Data Link (FDL) loopbacks, and Loopback status of the entire HDSL4 span

Faceplate LED Indicators

The T1AX has three LED indicators on the faceplate. The green ACTV LED indicates the plug-in card is communicating with a counter part T1AX in another Tellabs 1000 terminal. The ACTV LED blinks rapidly (120 flashes per minute) during self-test and provisioning, and slowly (60 flash es per minute) during a loopback test. The red FAIL LED indicates a plug-in card failure or problem communicating with the CPU. The red FAIL LED blinks when there is illegal signaling. The red LOC LED indicates a problem receiving incoming data (LOS or high BER). The green AIS LED is reserved for future use.

Performance Enhancements

The second-generation T1HD2-XCVR card versions (0120-0151, 0120-0152) have the following additional features, such as up to 23 kft repeatered T1 transmission on #24 AWG copper facilities, up to 17 kft repeatered T1 transmission on #26 AWG copper facilities, interoperable with the T1X-XCVR card when an H2TU-C or H2TU-R is used and compatible with other standards-based HDSL2 products.

Specifications

Compatibility with 0120-0147
  • ADTRAN H4TU-R: Part # 122X426L7
  • ADTRAN H4TU-C: Part # 122X401L4, Part # 122X403L4, Part # 122X404L4 and Part # 122X407L4
  • ADTRAN H4R: Part # 1223441L1, Part # 1223445L1, Part # 1221441L1 and Part # 1221445L1
Compatibility with 0120-0150
  • ADTRAN H4TU-R: Part # 122X426L1 and Part # 1223426L2
  • ADTRAN H4TU-C: Part # 122X401L1, Part # 122X401L2, Part # 122X403L1, Part # 122X403L2, Part # 122X404L1, Part # 122X404L2, Part # 1223004L11 and Part # 1223004L12
  • ADTRAN H4R: Part # 1223441L1, Part # 1223445L1, Part # 1221441L1 and Part # 1221445L1
Loop Parameters
  • Nominal input impedance: 135 Ω
  • Transmit power: 16.5 dBm (± 0.5 dBm)
  • Return loss: x > 12 dB (50 kHz to 200 kHz)
  • Span power (line powering): -190 Vdc up to 20 W maximum (one range extender)
  • Sealing current: -190 Vdc @15 mA
Faceplate Jacks
  • E OUT Equipment Output: DS1 test access toward the internal cross-connect (backplane)
  • E IN Equipment Input: DS1 monitoring access from the internal cross-connect (backplane)
  • F IN Facility Input: DS1 monitoring access from the facility (line)
  • F OUT Facility Output: DS1 test access toward the facility (line)
Installations
  • Supported in Tellabs 1000 MSAP CBA1120 and CBA1048
Software Support
  • Minimum base software FP16 and higher
Management
  • Tellabs Panorama Element Management System (EMS)
  • Craft User Interface (CUI)
Faceplate LED Indicators
  • LOC REM Yellow: Remote (far end) signal reception failure
  • LBK Green: One or more T1HDx device on the span (at local, remote, or both locations) is in the Armed state
  • LBK Flashing Green: This T1HD4-XCVR card is in loopback
  • LBK Flashing Yellow: 1 At least one T1HDx device on the span (but not this card) is in loopback
  • FAIL Red: Plug-in card hardware failure, or the card cannot communicate with the CPU
  • ACTV Green: Card is synchronized with far end
  • ACTV Amber: Card is synchronized, but data reception is unsatisfactory (high BER, SNR under margin threshold, LOF, loop attenuation threshold exceeded, AIS, or Yellow alarm)
  • ACTV Red: 1 Card is not synchronized with far end
  • ACTV off: 2 Card is not synchronized with far end
  • LOC REM Red: Local signal reception failure (LOF, LOS,high BER, and so forth)
Signaling
  • Framing: SF, ESF, Unframed, and Auto framing formats
  • Line coding: TC-PAM
  • Loopback modes: Equipment and Facility
  • Transmission: One pair full duplex
Compliance
  • IEC 801-2
  • GR-1089-CORE (Class A2)
  • ANSI T1.418-2002.TA-NWT-1210
  • Telcordia Class AC with span power
  • FCC part 15 Class A
  • T1.418, Issue 2
Environmentals
  • Humidity (relative): 5 to 95% non-condensing
  • Operating temperature: -40 F / -40 C to +149 F / +65 C
Power
  • Typical power consumption (with sealing current): 9 W
  • Typical power consumption (span power at 62mA span load): 22 W
Interfaces
  • One (1) HDSL2 T1 (1.544-Mbps) interface per card
Physical
  • Weight: 0.5 pound (0.23 kg)
  • Height: 5.125 inches (13.018 cm)
  • Depth: 10.5 inches (26.67 cm)
  • Width: 0.563 inch (1.429 cm)
Range Limits (with no bridged taps) with card version 0120-0147
  • #24 AWG no repeaters: 14.8 kft (4.5 km)
  • #24 one repeater: 30.2 kft (9.2 km)
  • #24 two repeaters: 45.6 kft (13.9 km)
  • #26 AWG no repeaters: 10.5 kft (3.2 km)
  • #26 AWG one repeater: 21.3 kft (6.5 km)
  • #26 AWG two repeaters: 32.1 kft (9.9 km)
Range Limits (with no bridged taps) with card version 0120-0150
  • #24 AWG no repeaters: 15.25 kft (4.6 km)
  • #24 AWG one repeater: 30.3 kft (9.2 km)
  • #24 AWG two repeaters: 45.35 kft (13.8 km)
  • #26 AWG no repeaters: 10.8 kft (3.3 km)
  • #26 AWG repeater: 21.35 kft (6.5 km)
  • #26 AWG repeaters: 31.9 kft (9.7 km)
Product Specifications Sheet

T1 HDSL 4-Wire Transceiver (T1HD4-XCVR)
Product Specifications
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