ADTRAN AHDSL2 specifications Part Number Description, LED Indicators

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Table 1 lists and defines the H2TU-C Front Panel LED indicators.

Each ADTRAN Litespan H2TU-C line card provides a 1.552 kbps data transport over one unconditioned CSA copper pair. These CSA loops can range up to 12 kft of 24-AWG twisted pair wire.

The Litespan H2TU-C can be used in Litespan 2000, Litespan 2012, and Litespan ONU channel bank assembly (CBA) systems containing Litespan system software versions of 11.0.0 or higher. Each H2TU-C works with the following multiple list versions of the HDSL2 unit remote end (H2TU-R):

Part Number

Description

 

 

 

1222024L6

T200 H2TU-R, Local Power

1223024L9

T200 H2TU-R, Local Power

1221026L6

T200 H2TU-R MON

1222026L6

T200 H2TU-R MON

1222026L9

T200 H2TU-R Q

1223026L9

T200 H2TU-R Q

122x024L7

T200 H2TU-R, Local Power

122x026L1

T200 H2TU-R

122x026L5

T200 H2TU-R B

122x026L7

T200 H2TU-R S

(where x = 1, 2 or 3)

 

 

The H2TU-C can be deployed in circuits consisting of one H2TU-C and one H2TU-R. Lightning and power cross-protection is provided at each twisted pair interface of the ADTRAN H2TU-C line card. Local power bus fusing is also used to protect the Litespan channel bank backplane, Litespan bank power supplies, and neighboring Litespan line cards in the event of catastrophic line card failure.

The Litespan H2TU-C uses a DC-to-DC converter to derive span powering voltage from the Litespan –48 VDC switched battery supply.

Simplex current of 30 mA of current may be coupled onto the HDSL2 loop span to power the H2TU-R (see Figure 2).

NOTE

Depending on the type of H2TU-R used in the circuit, different provisioning options will be available.

 

 

Table 1. LED Indicators

 

 

 

LED

Indication

Description

 

 

 

 

Off

Indicates loss of power to H2TU-C

STAT

Green

Normal operation; H2TU-C is in sync with the H2TU-R

Flashing Green

Acquiring HDSL2 synchronization with H2TU-R

 

 

Red

Failure indication; unable to start/load firmware

 

 

 

 

Off

HDSL2 signal achieved

HLOS

Red

HDSL2 loss of synchronization

 

Flashing Red

DC continuity fault detected on HDSL2 loop

 

 

 

RLOS

Off

DS1 signal from the CPE is present at H2TU-R

Red

DS1 signal from the CPE is absent at H2TU-R or Framing does not match

 

 

 

 

 

Green

HDSL2 SNR margin is optimum (6 dB or greater)

DSL

Yellow

HDSL2 SNR margin is marginal (1 dB to 5 dB)

Red

HDSL2 SNR margin is poor (0 dB)

 

 

Flashing

HDSL2 pulse attenuation is > 30 dB

 

 

 

 

Off

No HDSL2 CRC errors within the last 30 minutes

HCRC

Yellow

Four or more HDSL2 CRC errors in last 30 minutes

 

Red

HDSL2 CRC errors are being detected

 

 

 

 

Off

The unit is not armed or in loopback

ARM/LBK

Green

The unit is in loopback

 

Yellow

The unit is armed but not in loopback

 

 

 

B8ZS

Green

The line code is B8ZS

Off

The line code is AMI

 

 

 

 

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61221002L2-5B

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Contents Revision History L2-5B Issue 2, August Clei Code SLL5R3DGFeatures GeneralLED Indicators Part Number DescriptionInstallation ApplicationsProvisioning ComplianceCompliance Codes Cross-Connect Commands Provisioning CommandsAdministration Commands Maintenance CommandsHdsl Provisioning Commands T1 Provisioning CommandsPower Requirements Testing CommandsAlarms Testing CommandsPower Parameters Deployment GuidelinesLoop Insertion Loss Data MaintenanceHDSL2 Loss Values Warranty and Customer Service Troubleshooting ProceduresProduct Specifications Adtran H2TU-C Specifications Loop InterfaceThis page is intentionally blank Loopback Control Codes Hdsl Maintenance ModesLoopback Process Description Table A-1. In-Band Addressable Loopback Codes Dbdb This page is intentionally blank Maintenance Menu Provisioning Menu Testing Menu Main Menu20. T1 Maintenance Menu Maintenance Menu and Associated SUB-MENUSHdsl Maintenance Menu Additional Hdsl Maintenance Commands Hdsl Maintenance MenuRTRV-ALM-HDSL Command INIT-REG-HDSL CommandRTRV-PM-T1 Command T1 Maintenance MenuINIT-REG-T1 Command INIT-REG-T1Hdsl Provisioning Menu Provisioning MenuCross-Connection Menu 15. T1 Provisioning MenuDLT-CRS-T1 DLT-CRS-T1 CommandCROSS-CONNECTION Menu ENT-CRS-T1ENT-CRS-T1 Command RTRV-CRS-T1 CommandED-HDSL ED-HDSL CommandsHdsl Provisioning Menu ED-GOS-HDSLED-GOS-HDSL Command MONTYPE= ES, SES, UAS, LA, SNR, CVT1 Provisioning Menu ED-GOS-T1 CommandED-T1 Commands ED-GOS-T1OPR-LPBK-HDSL Testing Menu← Enable a loopback RLS-LPBK-HDSLH2TU-C Customer Loopback Initiating Mtau Test Access Figure C-1. Split ModeFigure C-2. MON Mode Removal of Mtau Test Access

AHDSL2 specifications

ADTRAN AHDSL2 is a sophisticated technology designed to enhance broadband connectivity, primarily focusing on delivering high-speed internet access through existing copper telephone lines. This solution is integral in supporting various applications, including voice, video, and data transmission, making it a versatile choice for service providers looking to upgrade their networks.

One of the key features of ADTRAN AHDSL2 is its ability to support asymmetric digital subscriber line (ADSL) technology, which allows for faster download speeds compared to upload speeds. This asymmetry is particularly beneficial for typical internet usage patterns where users often download more data than they upload. AHDSL2 can provide download speeds of up to 24 Mbps and upload speeds around 1 to 3 Mbps, depending on the line conditions and distance from the central office.

ADTRAN's AHDSL2 technology incorporates advanced capabilities such as auto-negotiation and improved line diagnostics. These features enable service providers to automatically adjust the settings for optimal performance based on the quality of the copper line. Furthermore, the built-in diagnostics tools help in the identification and troubleshooting of potential issues, reducing time and resources spent on maintenance and support.

The technology also supports the ITU G.992.3 and G.992.5 standards, which enhance the reach and efficiency of DSL services. It offers better performance in high-noise environments and allows for longer distances between the end-user and the central office, thus expanding the coverage area for broadband services.

Another significant aspect of ADTRAN AHDSL2 is its ability to operate over a range of frequencies, which minimizes interference from other services. By using frequency division multiplexing, the technology ensures that voice and data can be transmitted simultaneously without degradation of service quality.

ADTRAN AHDSL2 is also designed with scalability in mind, making it suitable for various deployment scenarios, whether in residential or commercial settings. Service providers can easily integrate this technology into their existing networks, ensuring a seamless upgrade path as customer demands for bandwidth continue to rise.

Overall, ADTRAN AHDSL2 stands out as a reliable and efficient solution for enhancing broadband services over copper infrastructure, with features that cater to both service provider needs and end-user demands for high-speed internet access. Its combination of advanced technology and easy integration makes it a compelling choice for operators looking to improve their service offerings.