4.Depress the recessed TEST pushbutton to initiate the test. The TEST LED will illuminate GREEN and the ERR LED should go out following synchronization to the test pattern from the far end.

5.If the far end unit is a U-BR1TE V using the internal 2047 test pattern, perform steps 1 through 4, choosing the same front panel switch setting. If the far end is a test set, ensure it is configured for a 2047 test pattern.

6.To insert one bit error, momentarily (for less than two seconds) depress the TEST pushbutton. Bit errors will be seen at the far end test unit.

7.To deactivate the loopback, depress the TEST pushbutton for two seconds, until the GREEN TEST LED is extinguished, or select NORM on the NORM/PTRN DIP switch. Upon deactivation of the test, the TEST LED will go out.

To initiate a point-to-point test using an external DS0 digital test set, perform the following:

1.Insert the TX and RX bantam plug of the DS0 digital test set into the U-BR1TE V respective front panel bantam jacks. Connect the clock input of the DS0 digital test set to the channel banks clock source (D4’s OIU, or the SLC-96 SSU). Configure the test set for Near Logic and 64 kbps.

2.Select the desired test direction, LPTX or CRTX, using the ten-position rotary switch. Refer to Table 2.

3.Select the desired bearer channel using the B1/B2 DIP switch.

4.Depress the recessed TEST pushbutton to initiate the test. The TEST LED will illuminate

YELLOW.

5.If the far end unit is a U-BR1TE V using a DS0 digital test set, perform steps 1 through 4, choosing the same front panel switch setting. Ensure that both test sets are configured for the same test pattern (511, 2047). If the far end unit is a U-BR1TE V using the internal 2047 test pattern, perform steps 1 through 4 of the previous section.

6.Observe the DS0 digital test set for bit errors.

7.To deactivate the loopback, depress the TEST pushbutton, or remove the transmit bantam plug. Upon deactivation of the test, the TEST LED will go out.

Local Loopback (LPBK)

A bilateral loopback can be initiated from the U-BR1TE V front panel for either bearer channel. A local test pattern source is not required for this test. To initiate a local loopback, perform the following:

1.Select the desired bearer channel using the B1/B2 DIP switch.

2.Select LPBK using the ten-position rotary switch. See Table 2.

3.Depress the recessed TEST pushbutton to initiate the test. The TEST LED will illuminate

YELLOW.

4.To deactivate the loopback, depress the TEST pushbutton. Upon deactivation of the test, the TEST LED will go out.

Local Performance Monitoring

Performance Monitoring of the local T1 carrier system and 2-wire U-interface of the ISDN data can be performed from the front panel without interruption of service to the customer. For this test, bearer channel selection is not applicable and a test pattern source is not required. To initiate a local performance monitoring session, perform the following:

1.Ensure the NORM/PTRN DIP switch is in the NORM position, and that a bantam plug is NOT installed in the front panel TX bantam jack.

2.Select ADR1 using the ten-position rotary switch.

3.Depress the recessed TEST pushbutton to initiate the test. The TEST LED will illuminate GREEN.

4.The total number of Near End Block Errors (NEBE) received are simultaneously displayed as crc errors with the LP and CR CRC status LEDs. (See Table 3).

5.To exit local performance monitoring, depress the TEST button for two seconds or longer. Upon deactivation of the test, the TEST LED will go out.

61104020L4-5C

Section 61104020L4-5, Issue 3

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ADTRAN D4 U-BR1TE V warranty Local Loopback Lpbk, Local Performance Monitoring
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D4 U-BR1TE V specifications

ADTRAN D4 U-BR1TE V is a state-of-the-art broadband networking solution designed to support next-generation services with a focus on reliability, flexibility, and high-speed connectivity. As telecommunications companies strive to meet the ever-increasing demand for bandwidth, the D4 U-BR1TE V stands out as a powerful tool that enables service providers to deliver superior services to their customers.

One of the main features of the ADTRAN D4 U-BR1TE V is its versatility in deployment options. This device can be used in various environments, including central offices, remote locations, and outdoor settings. It supports multiple access technologies, such as VDSL2, ADSL2+, and Ethernet, allowing operators to choose the best technology for their specific needs. This flexibility ensures that service providers can efficiently leverage their existing infrastructure while expanding their service offerings.

The D4 U-BR1TE V is equipped with advanced vectoring technology that significantly reduces crosstalk interference, thereby enhancing the overall performance and capacity of DSL connections. This allows operators to extend the reach of their broadband services while delivering higher speeds to end-users. Alongside vectoring, it incorporates G.fast technology, enabling ultra-fast broadband speeds over short copper lines, making it ideal for dense urban areas or multi-dwelling units where bandwidth demand is highest.

In addition to its robust performance capabilities, the ADTRAN D4 U-BR1TE V is designed with operational simplicity in mind. It features an intuitive graphical user interface that streamlines management and monitoring tasks, reducing the burden on network operations teams. Furthermore, its support for cloud-based management platforms allows service providers to automate network monitoring and troubleshooting, ensuring high service levels and quick resolution of issues.

Another notable characteristic of the D4 U-BR1TE V is its scalability. Service providers can easily expand their network by adding additional units as demand grows, ensuring that they can meet the future needs of their customers without extensive overhauls or infrastructure upgrades.

In conclusion, the ADTRAN D4 U-BR1TE V represents a significant advancement in broadband technology. By combining flexibility, high performance, and ease of management, it empowers service providers to deliver enhanced broadband experiences to their customers while efficiently managing their network resources. With its comprehensive feature set and future-proof capabilities, it is an essential component for operators seeking to stay competitive in the increasingly demanding telecommunications landscape.
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