Table A-1. HDSL4 Loopback Control Codes

Type

Source1

Code2,3

Name

Abbreviated

(N)

3in7 (1110000)

Loopback data from network toward network in the HTU-R.

 

(N)

4in7 (1111000)

Loopback data from network toward network in the HTU-C.

 

(N)

2in6 (110000)

Loopback data from network toward network in first HRE.

 

(N)

3in6 (111000)

Loopback data from network toward network in second HRE.

 

(C)

6in7 (1111110)

Loopback data from customer toward customer in HTU-C.

 

(C)

5in7 (1111100)

Loopback data from customer toward customer in HTU-R.

 

(C)

4in6 (111100)

Loopback data from customer toward customer in first HRE.

 

(C)

5in6 (111110)

Loopback data from customer toward customer in second HRE.

 

 

 

 

Wescom

(N)

FF1E (1111 1111 0001 1110)

Loopback data from network toward network at HTU-C.

 

(C)

3F1E (0011 1111 0001 1110)

Loopback data from customer toward customer at HTU-C.

 

(N)

FF04 (1111 1111 0000 0100)

Loopback data from network toward network at HRE1.

 

(N)

FF06 (1111 1111 0000 0110)

Loopback data from network toward network at HRE2.

 

(C)

3F04 (0011 1111 0000 0100)

Loopback data from customer toward customer at HRE1.

 

(C)

3F06 (0011 1111 0000 0110)

Loopback data from customer toward customer at HRE2.

 

(N)

FF02 (1111 1111 0000 0010)

Loopback data from network toward network at HTU-R.

 

(C)

3F02 (0011 1111 0000 0010)

Loopback data from customer toward customer at HTU-R.

 

(C)

FF48 (1111 1111 0100 1000)

Loopback data from customer toward customer at HTU-R.(FDL)

 

(N)

FF48 (1111 1111 0100 1000)

Loopback data from network toward network at HTU-R. (FDL)

 

(N/C)

1 in 3 (100)

Loopdown everything.

 

(N/C)

FF24 (1111 1111 0010 0100)

Loopdown everything. (ESF-DL)

 

 

 

 

1.The Source column indicates from which side of the interface the control codes are sent. For example, an (N) indi- cates a network sourced code while a (C) indicates a customer sourced code.

2.All codes are in-band unless labeled ESF-DL.

3.All codes listed above must be sent for a minimum of 5 seconds to be detected and acted upon.

A-2

Issue 1, December 2003

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ADTRAN T200 H4TU-R specifications Table A-1. HDSL4 Loopback Control Codes, Type Source1 Code2,3 Name
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T200 H4TU-R specifications

The ADTRAN T200 H4TU-R is a versatile and advanced telecommunications device designed for high-speed data transmission and enhanced connectivity. It serves primarily in carrier-grade applications, enabling service providers to deliver reliable broadband services to their customers. This device integrates multiple features and technologies that ensure optimal performance and flexibility in various networking environments.

One of the key features of the T200 H4TU-R is its ability to support high-speed data services over existing copper or fiber infrastructures. It utilizes G.SHDSL technology, which allows for symmetrical data rates ranging from 192 kbps to 5.7 Mbps, making it suitable for both enterprise and residential applications. This capability is essential for businesses requiring dedicated bandwidth for applications like VoIP, video conferencing, and cloud services.

The T200 H4TU-R also supports various interface options, including Ethernet over G.SHDSL and T1/E1 lines, which provides compatibility with multiple legacy systems. This flexibility extends the useful life of existing networks while enabling a smoother transition to newer technologies. The device features dual Gigabit Ethernet ports, allowing for easy integration into modern networking setups while facilitating network redundancy and load balancing.

Built with scalability in mind, the T200 H4TU-R can accommodate the growing demands of service providers. Its management capabilities are further enhanced by support for SNMP and Web-based interfaces, enabling operators to monitor network performance and promptly address any issues that arise.

Another significant characteristic of the T200 H4TU-R is its robust error correction capabilities, which ensure data integrity and minimize the risk of data loss during transmission. It employs advanced technologies such as H4 (High Capacity) coding and interleaved mode, effectively increasing data rates while maintaining reliability.

For installations, the device offers versatile powering options, including Power over Ethernet (PoE), which simplifies deployment while reducing cabling requirements. Additionally, its compact form factor enhances space efficiency in network closets.

In summary, the ADTRAN T200 H4TU-R delivers a powerful combination of speed, reliability, and flexibility. Its advanced G.SHDSL technology, support for various interface types, robust error correction, and management capabilities make it an ideal choice for service providers looking to enhance their broadband offerings while ensuring future scalability and performance.
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