Isdn Only MLT Channel Test -LUNT Mode | ADTRAN SLC-5 U-BR1TE III

When the U-BR1TE III operation is normal, the ADR7 position of SW1 does not have a function.

NOTE

This test option is only available on power up of the U-BR1TE III.

ISDN Only - MLT Channel Test -LUNT Mode

When a Pair Gain Test Controller (PGTC) is connected to the U-BR1TE III and the Test Initiate Voltage (116 Vdc behind 8 kΩ) is applied to the Tip with the Ring open, the following occurs:

1.The channel unit sends a Channel Test mp-eocmessage downstream to the LULT.

2.The unit produces a 333 Hz test tone between the Tip and Ring leads. This tone is compliant with TR-TSY-00465.

When the Test Initiate Voltage is removed, the test tone is subsequently removed, the active test status indication to the bank controller is removed, and the Return to Normal mp-eocmessage is sent to the LULT. The channel unit then begins re- synchronization of the U-interface between the LUNT and the ISDN switch.

ISDN Only - MLT Channel Test -LULT Mode

When a PGTC initiates a channel test at the COT, the COT channel unit sends a Channel Test mp-eoctoward the LULT. Upon receipt by the LULT of this mp-eocmessage, the following events occur:

1.The channel unit informs the bank controller of a test request.

2.Upon completion of handshaking with the channel test equipment, the bank controller commands the channel unit to close its channel test relay. This has the effect of connecting the customer drop to the common equipment through LPTT and LPTR and the channel unit U-interface to CHTT and CHTR. The test setup sequence is complete.

3.Upon completion of the automatic test, the channel unit is commanded by the bank controller to de-energize the channel test relay.

4.Upon reception of the Return to Normal mp-eocmessage, the channel unit begins re-synchronization

of the U-interface between the LULT and the NT1.

Performance Monitoring TR829

The U-BR1TE III supports performance monitoring remotely from the ISDN switch.

IDSL/DDS Description

The U-BR1TE III may be deployed in the adjacent to customer mode to provide transport for DDS/Frame Relay services with an ADTRAN IDSL OCU-R. This allows pair savings over traditional DDS deployment on local loops up to 18 kft on mixed gauge wire. The IDSL OCU-R is used to terminate the U-interface at the customer premises provided by the U-BR1TE III and to convert the 2-wire ISDN signal to a 4-wire AMI DDS signal for presentation to the customer. Together, the U-BR1TE III and IDSL OCU-R allow testing over the ISDN transport network to be performed with traditional DDS methods. In this mode U-BR1TE IIIs may be placed in tandem and function as DS0 DPs while the IDSL OCU-R functions as an OCU. See Figure 6 for various U-BR1TE III DDS arrangements.

DDS Testing

For leased mode or DDS applications with the U-BR1TE III the D channel is typically disabled. Without the D channel, standard ISDN eoc loopbacks are unavailable to the ISDN transport system and testing may only be accomplished by using the in- band DDS loopback commands. The U-BR1TE III responds to latching loopback sequences for the DS0 DP. The U-BR1TE III allows the OCU loopback command to pass inband downstream to the IDSL OCU-R.

Upon receipt of a DS0 DP latching loopback sequence the U-BR1TE III initiates a bilateral loopback for the B1 channel. This bilateral loopback allows testing of the 2B1Q local loop to the IDSL OCU-R simultaneously with network testing to the U-BR1TE III.

Section 61102040L4-5, Issue 2

61102040L4-5B

SLC-5 U-BR1TE III specifications

The ADTRAN SLC-5 U-BR1TE III is an advanced digital subscriber line (DSL) technology that plays a crucial role in delivering high-speed broadband services to residential and commercial customers. As part of the SLC-5 product line, this device is designed to seamlessly support both traditional TDM and next-generation packet services, ensuring versatility and strong performance in various network configurations.

One of the key features of the SLC-5 U-BR1TE III is its ability to support multiple DSL technologies, including ADSL, ADSL2+, VDSL, and VDSL2. This flexibility allows network operators to deploy the most suitable technology based on customer requirements and available infrastructure. By utilizing these DSL technologies, the device provides enhanced data rates, allowing for increased bandwidth and better overall service quality.

The SLC-5 U-BR1TE III is known for its robust architecture, which accommodates up to 48 DSL lines per unit. This high-density capability makes it an attractive option for service providers aiming to optimize their network investments. Additionally, the unit supports various interfaces for integration within existing systems, including T1/E1 and Ethernet, making it easier to connect to core networks without significant upgrades.

Another notable characteristic of the SLC-5 U-BR1TE III is its built-in intelligence, which enables dynamic bandwidth allocation. This feature optimizes how bandwidth is distributed among subscribers to ensure equitable access and smooth service delivery, even during peak usage times. Furthermore, the device supports advanced monitoring and management capabilities, helping operators maintain network performance and address issues proactively.

In terms of deployment, the SLC-5 U-BR1TE III is designed for easy installation in diverse environments, such as central offices or remote locations. Its compact form factor and fan-less design contribute to reduced power consumption and lower operating costs, making it an environmentally friendly choice.

Overall, the ADTRAN SLC-5 U-BR1TE III is an exemplary solution for service providers seeking to enhance their DSL offerings. With its support for multiple DSL technologies, high-density capabilities, dynamic bandwidth management, and ease of deployment, it continues to be a cornerstone in the evolution of broadband connectivity, paving the way for improved user experiences and increased satisfaction.