transport of 2B+D information. Block error rate performance over the T1 facility is monitored and is available to the network.

The SLC-5 U-BR1TE III incorporates a feature that allows for detection of ISDN capable and non-ISDN capable SLC-5 Bank Controller Units (BCU). In addition, the unit will facilitate communications to the non-ISDN capable BCU for the time slots associated with the adjacent physical slot, eliminating the need for the NULL Channel Unit, P/N 1200102L1 in the non-ISDN SLC-5 terminals. Earlier versions of the SLC-5 BCU will not recognize an ISDN channel unit ID, and will not assign the required time slots of the next physical position for 2B+D operation. For previous versions of the SLC-5 U-BR1TE, a NULL Channel Unit, which communicates to the non-ISDN capable BCU, is required to reserve the associated time slots for 2B+D service.

By automatically determining the version and requesting the necessary time slots for the non-ISDN capable BCUs, the U-BR1TE III eliminates the confusion regarding 2B+D deployment, and the requirement of deploying the NULL Cards. The U-BR1TE III will operate properly when a NULL Card is installed in the adjacent physical slot, as in a replacement situation.

Features

U-BR1TE III features support both ISDN and DDS, plus features common to both as listed here:

ISDN Features:

•Span powers U-repeaters with 43 mA @ -28 to -120 Vdc for ISDN applications.

•Provides for the transport of ISDN Basic Rate 2B+D information over T1 facilities in the 3-DS0 format specified in TR-NWT-000397.

•NULL card not required with non-ISDN BCUs.

•B1 or B2 loopback addressability at the faceplate for the NT1 and up to six devices in the Network-to-Customer direction.

•Compatible with MLT 3.0/ISDN per TR-NWT-000397, Issue 3, December 1993.

DDS Features:

•Span powers an IDSL OCU-R with 12 mA @ -120 Vdc for DDS applications.

•Perform bidirectional loopback (loop and network) when commanded into DS0 DP loopback from the network direction only.

•Loopback release in response to TIPs generated from the network direction per TR62310.

•Remap all subsequent DS0 DP loopback codes into respective eoc loopbacks to loopback respective downstream U-Repeaters, TRISDN elements, and U-BR1TES when optioned for 1B+D, or 2B+D.

•Pass OCU loopback code through to loop the IDSL OCU-R.

•Pass CSU loopback code through to loop the CSU/DSU and simultaneously send a remap to the NT1 eoc address.

•Transmit “Mux out of Sync” (MOS) upstream in B1 during DSL loop open, loss of signal, or loss of sync condition.

•Returns Abnormal Station Code (ASC) to the network in B1 during loopback conditions initiated by the IDSL OCU-R.

Common Features:

•ISDN 2B+D interface which meets all Layer 1 requirements as specified in ANSI T1.601-1992.

•18 kft nominal range on mixed gauge wire (42 dB @ 40 kHz loop loss, 1300 Ω DC resistance design).

•All Layer 1 maintenance functions.

•Performance monitoring of the Layer 1 facility as specified in TR-NWT-000397.

•A distinctive metallic DC test signature to identify either Line Unit Loop Termination (LULT) or Line Unit Network Termination (LUNT) mode of operation as specified in TR-NWT-000397.

•DS0 logic level transmit and receive data access through the front panel RJ-45 jack.

•Loop, carrier, and synchronization status available at the front panel.

•Compatible with AT&T SLC-2000, SLC Mode 1.

•Compliant with TR-TSY-829, TR-TSY-1089, FCC Part 15, Class A, and UL-1459.

ADTRAN has obtained the necessary licenses that grant the right to develop a SLC-5 U-BR1TE III. The ADTRAN U-BR1TE III replaces the AT&T AU92 (COT) and AU93 (RT) BR1TE channel units. The U-BR1TE III (TR 397 compliant) will not function with the AT&T BR1TE channel units across the T1 carrier facilities. The U-BR1TE III must be terminated across the T1 carrier facilities with another channel unit that meets TR 397.

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Section 61102040L4-5, Issue 2

61102040L4-5B

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ADTRAN SLC-5 U-BR1TE III warranty Isdn Features
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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.
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