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2600/2700 MainStreet Family Today's carriers recognize that improved service and competitive service pricing are key to maintaining customer loyalty. The equipment that is used to bring service to customer premises must also extend service benefits to those customers, while keeping operational costs to a minimum. Alcatel offers a family of data termination units (DTUs) that are an integral part of the managed bandwidth solution. These DTUs are remotely software configurable, field proven, and offer advanced xDSL capabilities to extract the maximum performance from installed copper facilities. The Alcatel DTUs provide enhanced data services over standard twisted pair copper into any TDM, frame relay or ATM network via Alcatel multiplexers. This fully managed suite of DTUs enables service providers to offer the solutions that their customers demand. High Performance DTUs for Public NetworksUsing Alcatel DTUs, service providers can offer network services at up to 1 Mb/s and distances of up to 7.2 km (4.5 mi.) over conventional, telephony-grade twisted pair wiring. Service providers find that these high performance DTUs increase their ability to deliver reliable, high speed data products and services directly to their customers as part of a fully managed service. The multirate Alcatel 2801 MainStreet HDSL Data Termination Unit (DTU) provides a simple and economical vehicle to deliver data services at speeds of up to 1 Mb/s over a single pair of unconditioned copper wires. This solution is excellent for such applications as LAN interconnection, high speed extranet and intranet connections, and server connections for web hosting. HDSL provides the advantage of increased speed and distance, along with improved reliability, and is unaffected by bridge taps or changes in wire gauge. The Alcatel 2700 MainStreet family of DTUs are extended range devices that operate at a distance of up to 7.2 km (4.5 mi.). These DTUs connect to 2B1Q or 27LC2 line cards in the 3600 MainStreet family of large multiplexers, and to interface modules on the full range of small muxes. They deliver data services to customer premises, often over external twisted pair cable with full line protection. Options include basic asynchronous data via V.24; increased speeds via V.35; redundant network connections; and incorporated routers. The 2700 DTUs provide maximum bandwidth, flexibility and management at minimal cost. The Alcatel 2600 MainStreet family of DTUs provide a full suite of interfaces and options, including basic two-port V.24, eight-port V.24, two-port V.35, four-port FRADs (frame relay access devices), and special CPSS conversion units. The 2600 DTUs operate at a distance of up to 3 km (2 mi.) through a DNIC (data network interface circuit) line card connecting to the Alcatel node, and interface modules on some small muxes. These low cost DTUs deliver data services for on-premises, building riser and campus applications. The right choice Automatic self-diagnostics, extensive functional displays, automatic reconfiguration of replaced units, performance statistics and many more features make the Alcatel DTUs the ideal choice for delivering high speed data services to customers. Features include: Simple installation and field swaps
Central management and maintenance The Alcatel DTUs can be remotely managed from a 4602 MainStreet NetworkStation or Alcatel 5620 Network Manager (NM), formerly the 46020 Network Manager*, offering the following functions:
Special function DTUs Two variants of the DTUs provide data services over frame relay starting right at the customer premises. Frame relay connectivity - 2614 MainStreet Frame Relay DTU The 2614 DTU is a high performance FRAD that is capable of adapting a wide variety of data traffic types to frame relay networks via Alcatel multiplexers. The 2614 has four V.24 ports, providing data access for up to four devices. Internet and LAN connectivity - 2720 and 2721 MainStreet Internet/Router Termination Units The Alcatel 2720 MainStreet Internet Termination Unit and 2721 MainStreet Router Termination Unit were designed to address the growing demand for affordable alternatives in the expanding corporate intranet and Internet access markets. These units combine the capabilities of a router with the effective reliable access of a 2700 DTU to provide LAN access for one to multiple users over frame relay. Private network application Supporting all of the features previously described for public networks, Alcatel DTUs are also effectively deployed in private and enterprise networks. As a cost-effective method for extending data distribution and network access, Alcatel DTUs can exploit the existing twisted pair wiring infrastructure, thereby preventing the need to rewire with bulky and expensive data cabling or expensive fiber. MainStreet DTUs at workThe 2700 series of DTUs at the top left of the diagram are extended range devices that connect to an Alcatel node. In this TDM application, they are functioning within a master/slave timing subsystem, wherein one station (master) supplies the timing reference for each interconnected station or node (slave) independent of the 3600 node system clock. Each 2700 node terminates a subrate circuit from the subrate multiplexer. Beneath the 2700 DTUs, a 2801 is shown providing high speed (1 Mb/s) router access over one pair of unconditioned wires, without the need for repeaters. In the X.25 application, the 2700 DTUs are shown terminating circuits from an X.25 network accessed via a 3630 MainStreet Primary Rate Multiplexer node. In the multi-tenant building, several 2600 DTUs and a 2801 DTU are shown in a riser, on-premises application. These DTUs are providing connectivity to a centrally located 3600 node. The 2720 Internet Termination Unit provides carrier-managed 128 kb/s Internet access without tying up a port on an ISDN switch. The 2721 Router Termination Unit is shown in a small business LAN interconnect application. It contains a full IP/IPX router for mapping IP addresses to frame relay PVCs. The 2753E DTUs are providing network redundancy for a mission-critical router. They are connected to different 2B1Q line cards. Transmission performanceExtensive lab measurements have been performed to determine the maximum DTU operating distances over standard gauge twisted pair wire. Test results for the 2600 and 2700 series were performed as per ANSI T1.601, which injects noise during testing to better simulate actual loop conditions. Testing for the 2801 series was performed according to ETSI specification ETR 152. The 2801 DTU can run at several line rates and loop reaches, which provides service to customers outside the normal delivery range.
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An Industrial Partner 1999-2002. All rights reserved.
For over a decade, VoxTechnologies has been a leading source of industrial computers and complete system products for the O.E.M. and Systems Integrator. Our primary goal is to provide a solution source for engineers that have the challenging task of interfacing and controlling the real world.
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