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Multiservice Concentrator | Rel. 4.2 The Alcatel 7270 Multiservice Concentrator (MSC), formerly the 36177 Multiservices Platform*, seamlessly extends broadband core network capabilities and services to the customer premises. Based on the technology of the industry-leading Alcatel 7470 Multiservice Platform (MSP), formerly the 36170 Multiservices Switch*, the 7270 can be installed as either customer-located or remote central office equipment. By bringing ATM adaptation and traffic consolidation to the network edge, the platform significantly reduces network costs and simplifies network operations, administration and maintenance (OAM). The 7270 Multiservice Concentrator aligns completely with the system features, traffic management and call control capabilities of the 7470. The platform is manageable by the Alcatel suite of network and service management products, including the Alcatel 5620 Network Manager (NM), formerly the 46020 Network Manager*. Importantly, the platform offers a significant cost advantage to those already using the 7470 and the 5620 in their networks by reducing training costs and increasing speed to market. Target applications for the 7270 include:
Architecture and physical configuration The 7270 has been carefully designed and packaged to ensure easy installation, commissioning and maintenance in space-limited environments. Two models are available: a six-slot chassis, ideal for use in an enterprise configuration, and an eight-slot chassis, suitable for carrier use. Both are available as a desktop unit, or as a 48 cm (19 in.) or 58 cm (23 in.) rack-mount unit. In a non-redundant system, one slot contains the integrated Control/Switching Hub card and the remaining slots are available as universal card slots (UCSs). In a redundant system, two slots are used for the Control/ Switching Hub cards. All Control, Switching Hub and interface cards are common to both the six-slot and eight-slot 7270. The system can be configured as a non-redundant unit in situations where cost is a priority or as a fully redundant unit in situations where a higher fault tolerance is needed. For redundancy on the network connection link (aggregate) 1+1 automatic protection switching is supported on the OC-3/ STM-1 cell relay interface cards. The 7270 uses a mid-plane design in which the card slots are split into two functions. The main cards, which plug in from the front, provide the core functionality. The I/O modules, which plug in from the back, provide the physical interface breakout. All of the main cards can be replaced or upgraded without disrupting any of the system cabling. Furthermore, 1+1 redundancy on the OC-3/STM-1 interfaces allows these cards to be replaced or upgraded without any disruption to service. Cards also include operational and diagnostic LED displays to help maintenance personnel gauge the status of the system at a glance. Each power supply provides sufficient power for three slots - one supply will power three slots, two supplies are sufficient for six slots, etc. Adding additional supplies beyond this requirement provides the 7270 with power supply redundancy. All cards and modules within the platform are field-replaceable, including fans and power supplies. Switched and permanent virtual circuits The 7270 Multiservice Concentrator supports point-to-point and point-to-multipoint connections for permanent virtual circuits (PVCs), soft PVCs (SPVCs) and switched virtual circuits (SVCs). SPVCs are permanent connections that use signaling resources to set up and take down network connections, providing faster rerouting while maintaining interoperability with standard PVCs. SVCs are established on an as-needed basis to allow dynamic bandwidth allocation. Universal services The 7270 is ideal for consolidating different traffic types, including switched voice, frame relay, private line, Ethernet and cell relay. It has the necessary system, traffic management, and network management features for large-scale network services, based on a future-proof ATM infrastructure. Traffic management The 7270 provides traffic management and congestion control features that are fully compliant with ATM Forum Traffic Management Specification, version 4.0 (TM4). These include an industry-leading connection admission control feature for determining whether connection requests can be accepted. Alcatel switches support best-in-class ATM traffic management functionality to assure guaranteed quality of service (QoS) per virtual circuit (VC) or virtual path (VP), including: cell loss priority, early packet discard (EPD) and partial packet discard (PPD). The 7270 Multiservice Concentrator provides extensive traffic shaping and policing through a fully programmable usage parameter control (UPC) feature, which complies with the TM4 industry standard. Administration and maintenance The 7270 supports a full spectrum of fault management features, including connectivity verification and alarm surveillance. Software upgrades can easily be applied locally or remotely through the network using the industry-standard file transfer protocol (FTP). Network management The industry-leading family of Alcatel network and service management products, including the powerful 5620 Network Manager, manages the 7270. The 5620 provides element and network management functions, including alarm monitoring and card configuration, as well as network event monitoring and statistics collection. In addition, the 5620 provides VP/VC connection management, including resource allocation, connectivity verification, and fault detection with associated rerouting. If the platform or one of its network connections experiences a problem, details of the condition will be forwarded to the 5620, which has been installed at a central monitoring location. The 5620 controls trunks and can display network maps and overlay links by traffic class for ease of configuration and monitoring. It also supports partitioning for independent virtual private network (VPN) configuration and management. Node management The node management terminal interface (NMTI) can be used locally or remotely through a Telnet session. This craft interface can be used for configuration and diagnostics, as well as for receiving and/or responding to alarms.
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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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