From: Hellfire #1063 @1303007 VirtualNET Title: AXE Switching Systems part 2 Date: Sun Feb 04, 1996 16:50:20 Mountain of both the physical network and the end-user services is becoming vital to business success. Service providers must be able to meet customer demand for a range of services quickly, monitor service quality and network performance, and fix faults rapidly. Ericsson's Access Network Management System provides computer-based monitoring and control of an entire access network - up to a theoretical limit of 100,000 users - from a central location. It is the software 'glue' that will bind the mix of Ericsson Access Network hardware elements together into a seamless network solution. The system based on the successful RIDES network management system, which was initially developed for the Ericsson Raynet LOC2i passive optical network (PON) and RVS video distribution systems. The RIDES system is well proven, having had several years of real-life operation in fibre- and hybrid fibre-coaxial (HFC) access networks in the USA and elsewhere. The experience gained during these years means that RIDES has been developed into a system that offers not only powerful real-time control of network elements, but also supports the business needs of the service provider. It does this through features such as inventory control, network partitioning and scheduled service ordering (which allows circuits to be set up before the physical network is in place - especially useful in fast-growing networks). Remote Subscriber Multiplexer (RSM) The Remote Subscriber Multiplexer (RSM) is a well established part of the AXE switching system concept. It is a multiplexer capable of handling up to 30 subscribers, and offers a cost-effective way of extending network digitalisation out to small groups of subscribers in remote locations, or supporting all subscribers in a multi-occupancy building. The RSM handles PSTN and 64kbit/s data connections. Designed for use in both rural and metropolitan networks, it concentrates the traffic to the host AXE local exchange, but does not carry out any traffic switching functions. Coinbox telephones can be supported. Any or all of the RSM subscriber lines can be connected to a PBX. Two RSMs can be installed in a single cabinet to support up to 60 subscribers. The system may be installed outdoors or indoors and offers integrated operation, administration and maintenance from the host AXE local exchange. UMUX flexible multiplexer The UMUX flexible access multiplexer system is designed to meet virtually any business and residential subscriber access requirement for voice and data services for up to 120 subscribers. Using a system of standardised, modular interface cards, UMUX can deliver a mixture of services - including PSTN, ISDN, switched data and leased lines in bandwidths ranging from 600bit/s to 2Mbit/s - from a single point of access. On the transmission side, UMUX offers 2Mbit/s copper, radio and HDSL, and 8Mbit/s optical links. The system enables new services to be introduced very quickly, and by virtue of its modular architecture, can easily be adapted to future services or new technological advances without wasting existing investments. Powerful management capabilities provide end-to-end monitoring and configuration of subscriber circuits, while G.821-standard performance monitoring and 1+1 protection switching capability ensure high service reliability. DIAmuX flexible multiplexer DIAmuX is a flexible access system that provides a mixture of accesses (including fibre) for services such as PSTN, ISDN, analogue leased lines, 2Mbit/s, nx64kbit/s and V.11/V.24 data, for up to 500 subscribers. The main application for DIAmuX is any situation in which subscribers need access to a mix of PSTN and other services. This can include mainly residential areas in which ISDN or other more advanced accesses are required by only a few subscribers, or for businesses that require mixed service access. DIAmuX provides a single access xchange is still linked to one subscriber. RVS optical fibre CATV and broadband delivery system Ericsson Raynet Video System, RVS, provides an optical fibre alternative to today's coaxial systems for the distribution of cable television (CATV) and future broadband services. It is a hybrid fibre-coaxial (HFC) system that allows CATV operators to gain the benefits of fibre deployment while still utilising their existing coaxial access networks. RVS has a three-level system architecture with an optical trunk, a distribution system using Passive Optical Network (PON) technology, and a coaxial distribution system for the final drop to individual subscribers. It is a very cost-effective approach. A single RVS system can support up to 200,000 TV subscribers per Headend. Installation costs per subscriber are currently about the same as those for an equivalent coaxial system. The other main benefit is the inherently better quality compared with coaxial systems. This shows up in the superior signal-to-noise ratio, and the significantly higher MTBF (Mean Time Between Failures). Looking to the future, an RVS optical CATV system provides a distribution infrastructure that can relatively easily be upgraded, since the optical parts of the network use passive techniques, with no amplifiers that could require replacing. RVS supports all main fibre architectures from fibre-to-the-feeder nsions can be cordless. They have all the functions and features available via conventional wired extensions. Freeset will also in future be used in other public network access applications, particularly in connection with Personal Communication Services (PCS) and telezone (telepoint) services. Freeset is based on the pan-European DECT (Digital European Cordless Telecommunications) standard. It has been designed as a high capacity system, able to support the high densities of telephone extensions found in large offices and industrial sites where densities can reach 50,000 users per square kilometre. A single radio exchange can support up to 600 cordless extension phones, via a network of tiny radio base stations arranged to create small 'picocells' of 30-100m radius indoors and up to 300m outdoors. Speech quality is the same as that available from a wired extension, and there is a seamless, undetectable handover as users walk from one base station area to another. HDSL/ADSL transmission systems High-bit-rate Digital Subscriber Line (HDSL) and Asymmetric Digital Subscriber Loop (ADSL) transmission systems allow the provision of high-bandwidth (up to 6Mbit/s) services over ordinary copper lines over distances of several kilometres, without the need for repeaters. There is growing demand for high-bandwidth leased-line and ISDN services for applications such as LAN-to-LAN interconnection, videoconferencing and PBX interconnection. HDSL and ADSL help network operators meet these new demands quickly and cost-effectively by allowing them to exploit their existing copper networks. HDSL offers the high transmission speed and quality over copper that have previously only been available from fibre-optic links over the same distances. New high-value services can be offered at attractive rates by making better use of existing network facilities, and avoiding the high costs of installing fibre all the way to the customer. There are two HDSL transmission systems in the Access Network product portfolio: the Cobra-HTU two-pair system and the COLT-2 three-pair system. The Ericsson Cobra-ATU ADSL transmission system can provide transmission rates of up to 6Mbit/s in the downstream direction (towards the subscriber), while providing upstream rates of a few hundred kilobits per second. This makes it ideal for delivering subscriber-controlled entertainment and information services. For example, in services like video-on-demand, home-shopping and information retrieval, the video signals use the high-bandwidth downstream link, while the controlling functions only need a few kilobits per second. However, ADSL can provide enough capacity in both directions for applications such as video conferencing two-way and datacommunications. Digital Pair Gain Systems Digital Pair Gain Systems allow a single copper subscriber line to support between two and twelve separate subscriber accesses. This is equivalent to an increase in the capacity of the local access network by a factor of twelve, with no need for new subscriber cabling. This increased capacity can be used either to support new subscribers, or bring additional accesses to existing customers. The costs of developing an access network with Digital Pair Gain Systems generally compare very favourably with the alternative approach of installing additional copper cabling to each new subscriber. Digital Pair Gain Systems can be used on any subscriber lines whether served by electromechanical or fully-electronic digital exchanges. By allowing more users to share each digital subscriber line and providing additional lines for existing customers (for example, to add fax, data or PBX lines), Digital Pair Gain Systems improve the utilisation of existing network infrastructure and boost service revenues. There are three Digital Pair Gain Systems in the Ericsson Access Network portfolio: PCM-4, which allows up to four subscribers to share the same digital subscriber line; PCM-4D, which additionally provides 64kbit/s data capability; the Tucon 0+2, which allows BÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜ0 X 20 Miles North of Nowhere (303)932-1195 Littleton, CO M1986-1996X OMF 0 -ßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßß0