chassis occupies a space the size of a piece of notebook paper. Two TA 850 systems can be mounted side-by- side in either 19-inch or 23-inch relay racks. Preconfigured packages are available.

Features

The TA 850 includes the following features:

•T1/FT1 integrated access

•TDM to ATM migration

•Modular network interface for future xDSL compati- bility

•Integrated IP/IPX router

•Integrated DSX-1 PBX interface

•V.35 Nx56/64 DTE interface

•TR-08 signaling support

•Analog FXS and FXO voice expansion (four per board)

•SNMP management

•NEBS and UL 1950 compliance

•Industry leading 10-year warranty

Functional Description

The TA 850 System comprises the chassis, common cards, and access modules. Associated with the system are additional elements including an AC to DC power supply and battery charging unit and a battery pack for backup power.

WARNING

On TA 850 installations that do not use all chassis slots, UL 1950/NEBS requires that the empty slots must have a TA 850 blank unit (part number 1175099L1) installed in the opening.

External AC and DC Power. The ADTRAN AC/DC Power Supply/Battery Charging unit receives its pow- er from a standard 115 VAC outlet. During operation, the power supply maintains -54 VDC to the PSU. The power supply battery charging circuit maintains the battery pack at peak charge. In the event of an AC pow- er failure, the battery backup circuit automatically pro- vides battery power to the PSU for up to 8 hours. When AC power is restored, input power automatically re- turns to the AC supply and the battery charging circuit will recharge the battery to peak.

On the TA 850 chassis, the incoming power termination point is on either of two backplane connections: P7 or P6. (See Figure 2.) Both sources connect directly to the PSU. Connector P6 is used when the chassis is powered by the ADTRAN AC/DC Power Supply unit (P/N 1175043L1) which mounts externally to the chassis.

Connector P7 is used when -48 VDC is available on site and screw-type terminal connections are required.

P7

P6

Figure 2. TA 850 Backplane

PSU. The Power Supply Unit supplies -48 VDC and 20 Hz ringing voltage to the Router Controller Unit (RCU) and the access modules. The PSU converts

-48 VDC input to the required voltages needed to oper- ate all common units and access modules. The ring gen- erator circuit provides 20 Hz ring voltage to the analog access modules.

The PSU faceplate (see Figure 1 on page 1) shows the following: two GMT fuses (one for power and one for 20 Hz ring voltage), a channel bank status LED, and an alarm cutoff (ACO) pushbutton switch. The separately fused ring generator supplies up to 20 REN to the access modules.

RCU. The Router Controller Unit is a dual board assem- bly that provides the network interface. The RCU can provision, test, and provide status for any card in the channel bank. The faceplate has a DB-9 CRAFT port con- nection, dual bantam jack connection, plus network, V.35, and Ethernet LEDs.

Access Modules. The TA 850 is designed to support Quad FXS, Quad FXO, OCU DP, and UBR1TE access modules.

3. INSTALLATION

Before installing the TA 850, carefully inspect the

TA 850 Base Unit for shipping damage. If you suspect damage, file a claim immediately with the carrier and then contact ADTRAN Customer and Product Service. ( See “Warranty and Customer Service” on page 6.) If possible, keep the original shipping container for re- turning the TA 850 for repair or for verification of dam- age during shipment.

Your ADTRAN shipment includes the following items (if the unit is not purchased directly from ADTRAN, it may be packaged differently):

•TA 850 chassis, PSU, RCU, and blanks

•TA 850 System Installation and Maintenance Practice

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Issue 2, June 2000

61200376L1-5B

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ADTRAN 850 specifications Features, Functional Description, Installation
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850 specifications

ADTRAN 850 is a high-performance digital subscriber line (DSL) solution designed to meet the ever-evolving demands of telecommunications providers and their customers. This innovative platform enables operators to deliver high-speed broadband services over existing copper infrastructure, significantly enhancing the user experience.

One of the standout features of the ADTRAN 850 is its support for G.fast technology. G.fast is a next-generation access technology that allows for data rates of up to 1 Gbps over short distances. Utilizing advanced modulation techniques, G.fast is capable of providing ultra-broadband speeds to customers residing within close proximity to the distribution point. This capability significantly expands the service options for operators seeking to improve their last-mile connectivity.

The ADTRAN 850 also integrates with VDSL2, allowing service providers to leverage their existing DSL networks effectively. VDSL2 enhances bandwidth capabilities and can deliver speeds of up to 100 Mbps downstream and 100 Mbps upstream. This dual compatibility ensures that operators can maximize their investments while transitioning to more advanced technologies.

In terms of characteristics, the ADTRAN 850 is built with robustness and scalability in mind. It is designed to accommodate a wide range of deployments, from small rural communities to dense urban areas. The platform supports multiple service types, including residential and business services, and allows for customizable bandwidth allocation based on user needs.

Moreover, the ADTRAN 850 is equipped with advanced management capabilities. Its web-based management interface provides operators with actionable insights into network performance and customer usage patterns. This ensures proactive maintenance and optimization of the network, which is essential for maintaining high service quality.

Security features are also prominent in the ADTRAN 850, with built-in encryption and secure access protocols to protect sensitive customer data. This focus on security aligns with increasing regulatory requirements and customer expectations regarding data privacy.

In conclusion, the ADTRAN 850 is a versatile and powerful DSL solution that stands out for its support of G.fast and VDSL2 technologies, remarkable scalability, and robust management capabilities. Its ability to provide high-speed broadband services over existing copper lines makes it an essential tool for telecommunications providers looking to enhance their service offerings and improve customer satisfaction in today’s digital age.
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