Dokom Installs IP Broadband Network Technology; Siemens Supplies Its XpressLink Access Technology And Unisphere Networks' ERX Edge Routing Switches.Business/Technology Editors CHELMSFORD, Mass.--(BUSINESS WIRE)--Feb. 19, 2001 The Dortmund city network operator Dokom GmbH has awarded Siemens a contract to supply and commission an IP broadband network using DSL technology. The Dokom network will be built using the ERX Edge Routing Switch from Siemens' subsidiary Unisphere Networks Inc., USA, a leading provider of IP infrastructure to enable broadband data and voice services, and XpressLink access technology from Siemens. The first DSL connections were already put into operation by Siemens at the end of last year. In the first half of 2001, the network will be expanded to include the entire area covered by the Dokom license. Dokom is setting up a DSL network (Digital Subscriber Line See DSL. (communications, protocol) Digital Subscriber Line - (DSL, or Digital Subscriber Loop, xDSL - see below) A family of digital telecommunications protocols designed to allow high speed data communication over the existing copper telephone lines between end-users and ) to provide its customers with an attractive access for services including voice and data. Siemens' broadband XpressLink access technology and Unisphere's ERX Edge Routing Switch will be used as a DSL access platform. XpressLink enables Dokom to include both symmetrical SDSL See DSL. SDSL - Single-line Digital Subscriber Line and asymmetrical ADSL See DSL. ADSL - Asymmetric Digital Subscriber Line services in its product portfolio. SDSL supports bandwidths of up to 2.3 Mb/s in both directions for transporting data. Customers are currently offered high-speed Internet access using ADSL and an ISDN ISDN in full Integrated Services Digital Network Digital telecommunications network that operates over standard copper telephone wires or other media. connection over a single copper wire pair. ADSL is an asynchronous transmission system which means that data can be downloaded from the Internet (downstream) at a much greater speed than data can be sent by the user to the internet (upstream). Dokom has integrated these transmission services into target group-oriented service packets. The service packets were offered as complete solutions (e.g. for small office/home office See SOHO. (SOHO Soho (sōhō`, sə–), district of Westminster, London, England, known for its continental restaurants. Once a fashionable quarter, it became popular among writers and artists in the 19th cent. )) containing application solutions such as Unified Messaging (UMS) and IP telephony (telephony over the internet) based on high transmission services for internet and network connections. The ERX Edge Routing Switch has broadband RAS (1) See network access server. (2) (Remote Access Service) A Windows NT/2000 Server feature that allows remote users access to the network from their Windows laptops or desktops via modem. See RRAS and network access server. (Remote Access Server) functionality, which means that it can provide terminations for broadband customers within Dokom's IP network. At the same time, the ERX is used as a carrier class router which can route Dokom's broadband customers to the Internet or different VPNs. Virtual routers also support the building of VPNs, meaning that up to 50 routers working completely independently of one another can be set up on a single ERX. Dokom opted for Siemens as the supplier of turnkey equipment for this project because Siemens offered a convincing total concept incorporating the service features of the DSLAM (DSL Access Multiplexor) A central office (CO) device for ADSL service that intermixes voice traffic and DSL traffic onto a customer's DSL line. It also separates incoming phone and data signals and directs them onto the appropriate carrier's network. See DSL. XpressLink and the ERX Edge Routing Switch, and responded flexibly and quickly to the customer's requests. Background information XpressLink, the Digital Subscriber Line Access Multiplexer A Digital Subscriber Line Access Multiplexer (DSLAM) allows telephone lines to make faster connections to the Internet. It is a network device, located near the customer's location, that connects multiple customer Digital Subscriber Lines (DSLs) to a high-speed Internet (DSLAM) developed by Siemens, facilitates broadband IP and ATM services over existing telephone lines. The design placed particular emphasis on scalability and operability for widespread use. The flexible DSLAM architecture provides highly integrated DSL cards for ADSL, ADSL.Lite and SDSL (2B1Q and G.shdsl) and is already prepared for future DSL technologies such as VDSL See DSL. VDSL - Very high bit-rate Digital Subscriber Line . In addition to DSLAM for use in the Central Office, the XpressLink product family offers a wide range of Customer Premises Equipment See CPE. (CPE (Customer Premises Equipment) Communications equipment that resides on the customer's premises. CPE - Customer Premises Equipment ) for connecting users. Siemens is one of the leading suppliers of ADSL-over-ISDN technology which enables the simultaneous use of ADSL and ISDN over the same copper wire. XpressLink has already been supplied to 30 customers as a platform for network operators using either ADSL-over-ISDN or ADSL-over-POTS. The ERX has combined router RAS functionality which means that it can be used simultaneously as a router and broadband RAS (up to 32,000 users). This simplifies network design and contributes to lower operating and maintenance costs. The ERX also boasts leading failsafe capabilities and outstanding performance. All cards in the Edge Routing Switch can be equipped with 1:1 or N:1 redundancy. Normally a redundant design can only be achieved by connecting two devices in parallel. The ERX guarantees service quality for each user connected even at maximum capacity. The Edge Routing Switch also supports traffic engineering by means of Multi-Protocol Label Switching (MPLS) optimized for edge networks. Unisphere's ERX-1400 is an integral part of its Intelligent Service POP, an IP-based suite of products that defines a virtual POP, allowing the separation of services and service creation from the underlying infrastructure by distributing network intelligence to the edge of the network. This decoupling Decoupling The occurrence of returns on asset classes diverging from their normal pattern of correlation. Notes: Take for example stock and corporate bond returns, which normally rise and fall together. of services from infrastructure lays the groundwork for the ultimate goal of accessing any service from any end-user appliance. About Dokom Dokom operates a city network in Dortmund and offers its customers innovative services in the telecommunications area according to the motto "We are at home wherever you are at home". Dokom consists of the Dortmund public utility company, the Dortmund energy and water supplier, Versatel Deutschland, Westfalische Ferngas and Stadtsparkasse Dortmund. Dokom provides internet services, telephone services, outsourcing services for telecommunications systems, leased lines, e-commerce and a city information system. Dokom has 73 employees and with 8500 customers achieves sales of just under 30 million. http://www.dokom.de About Unisphere Networks Unisphere Networks, Inc. is a provider of data and voice platforms for service providers. Unisphere's edge routing switch, service mediation switch, and network and services management solutions help service providers create and deliver innovative IP solutions. Unisphere Networks also offers service providers technical expertise and professional services in order to deploy and maintain next-generation networking solutions. For more information, please visit Unisphere Networks at www.unispherenetworks.com. About Siemens Information and Communication Networks Group Siemens Information and Communication Networks Group (ICN ICN International Council of Nurses. ) is a leading provider of integrated voice and data networks for enterprises, carriers and service providers. Its comprehensive portfolio comprises, in particular, IP-based convergence solutions, and a full range of products for broadband access, optical transport networks as well as the integration, services and applications business. The Siemens Group thus provides complete solutions from a single source for the infrastructure of the Next Generation Internet See Internet2. , a prerequesite for mobile business. In fiscal year 2000 (year-end 30 September) ICN posted sales of 11.4 billion euro, and earnings before interest and taxes In financial and business accounting, earnings before interest and taxes (EBIT) is a measure of a firm's profitability that excludes interest and income tax expenses.[1] EBIT = Operating Revenue – Operating Expenses + Non-operating Income (EBIT EBIT See: Earnings Before Interest and Taxes EBIT See earnings before interest and taxes (EBIT). ) of 692 million euro. ICN employs 53,000 people worldwide. Further information about ICN is available at: http://www.ic.siemens.com/networks Unisphere is a trademark of Unisphere Networks, Inc. All other company and product names are trademarks or registered trademarks of their respective owners. |
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