SHDTU03b-Data 2/4 Wire G.SHDSL.bis TDM Data (V35/X21/RS530) NTU

TDM G.SHDSL.bis 2/4 Wire (V35/X21/RS530) NTU

The SHDTU03b-V35 offers a V.35 DTE interface which works over an SHDSL interface. The V.35 interface provides high-speed TDM services by way of a DB25 I/F and adapter cable. The factory selected RS-530 interface will electrically support RS-530, X.21and RS-449 with appropriate adapter cable. The data rate of DB25 I/F may be up to 5.696Mbps within one pair copper wires or 11.392Mbps within two pairs copper wires. The SHDTU03b-V35 can be configured and managed via EOC, or menu-driven VT100 compatible Async. terminal Interface, either locally or remotely.

2/4 Wire G.SHDSL.bis TDM Data (V35/X21/RS530) NTU schematic


  • Supports Nx64 V.35, X21, RS530, and RS449 over SHDSL
  • Standard ITU G.991.2 (2004) supports improved reach, speed and interoperability compared to conventional G.shdsl
  • Fast and cost-effective services of TDM on a single or two wire pair of existing copper loop infrastructure
  • Wetting current to protect copper line (optional)
  • Local management interface with console
  • Remote line loopback
  • G.SHDSL.bis Line performance monitoring (data rate and SNR)
  • Raw and per time interval statistics
  • For use in conjunction with BT's EPS8 and EPS9 circuits


WAN Interface:

  • Line Rate: ITU G.991.2 (2004)
  • Coding: Trellis coded pulse amplitude modulation (TC-PAM16 and TC-PAM32)
  • Support: Annex A ,B , F and G
  • Payload Rate: 64Kps to 5.696Mbps (N=1 to 89) for 2-wire model; 128Kbps to 11.392Mbps (N=1 to 172) for 4-wire model
  • Connection: RJ-45 jack (2-wire or 4-wire)
  • Impedance: 135 ohms

Data Interface:

  • Payload rates: Up to 5.696Mbps(for 2-wire model) or Up to 8.192Mbps(for 4-wire model)
  • Support: V.35/RS-530 or V.36/X.21

Indications: LEDs (Power, Alarm, Test, SYNC, Error, LBK, TD, RD)
DSL Timing: Internal; From DTE ( as V.35 and Ethernet)
Performance Monitoring: ES, SES, UAS, LOWS, Alarms and Errors

Loopback Tests:

  • Local Digital Loopback
  • Local Loopback
  • Remote Line Loopback
  • Remote Payload Loopback
  • Far-end Line Loopback
  • Far-end Payload Loopback
  • V.54 Loopback (for V.35 interface)
  • Build-in 2047(211-1) bit BER tester

Management: Configuration with keypads and LCD display; Console port (RJ45 , RS232); Support firmware upgradeable
Power Input: AC Input: 100~240V; DC Input: -36 ~ 72V; Dual power Input:100~ 240VAC, -36 ~ -72VDC
Power Consumption:
< 10W
Dimensions: 168 x 195 x 48mm (D x W x H)
Weight: 850g
Temperature: 0 ~ 50°C (Operating), -10 ~ 70°C (Storage)
Humidity: 10~90% non-condensing
Certification: CE, FCC, RoHS
MTBF: 70,000 hrs (25°C)

Live Demo of FRM220 Chassis

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