Featured Products by Lucent Technologies

Latest CPU and ASIC technology
delivers high throughput and reliability

A high level of siliconization makes the Stinger CM cost-effective, fast and reliable. Each CM derives its intelligence from a RISC processor under the direction of the True Access Operating System (TAOS). The Stinger CM also includes an exclusive on-board ASIC — a true 64 X 64 ATM switch — which gives the Stinger CM a maximum aggregate throughput of 1.6 Gbps, and the capacity to handle as many as 32,768 bidirectional calls. By leaving the actual switching to one extremely fast ASIC, internal operations are simplified, fewer components are required, and cost is kept low. Two PCMCIA expansion slots and expandable SDRAM memory ensure that the CM can be easily upgraded to support new features and increasing traffic.

• High-speed 260 MIPS RISC CPU for trunk initialization, connection setup and management, OA&M cell filtering and insertion, SNMP agent functionality, and other system control tasks
• True Access Operating System (TAOS) with comprehensive control and management features
• Exclusive ASIC for line-to-trunk, line-to-line and trunk-to-trunk connectivity; traffic shaping; flow control and priority queuing
• 1.6 Gbps switching fabric
• Bi-directional 64K cell buffering
• 32 MB SDRAM, expandable to 64 MB
• 2 PCMCIA slots for flash memory cards

Redundancy contributes to high availability

A great advantage of Stinger is its "always on" performance capability. The CM contributes to this high availability by monitoring all line interface modules (LIMs) for normal operation. If a LIM should fail, the CM can automatically switch to a standby LIM and alert the operator to hot-swap a working module for the defective one. Because the CM controls or influences most of the Stinger modules, it too can be backed up with a standby. By providing automatic switchover for crucial modules — including itself — the CM helps makes Stinger the most robust DSL access concentrator ever.

Hardware and software features
ease provisioning and management

The Stinger CM provides the interfaces for provisioning and management. Each module contains the two most commonly used port connectors for control and management access. Navis network management software facilitates extensive SNMP-based configuration, provisioning, monitoring and alarms, whether performed locally or remotely for one Stinger or for an entire network.

• 10/100 Mbps Ethernet port and serial craft port
• SNMP Agent, configurable through SNMP commands
• Provisioning Server
• ILMI support
• Supported under NavisAccess

Sophisticated traffic, bandwidth and congestion management
keeps I/O traffic flowing smoothly

The exclusive ASICs on Stinger execute sophisticated algorithms that enable intelligent control of traffic. Usage parameter control (UPC) provides policing of incoming traffic according to the five standard Quality of Service (QoS) categories identified in Version 4.0 of the ATM Forum Traffic Management Specification: CBR, VBR (rt & nrt), ABR and UBR. Buffer queue thresholds along with cell and packet discard rules provide congestion management (as needed), and both priority queuing and traffic shaping are used to ensure that Stinger participates in the overall management of bandwidth in the network. These and other techniques enable the CM to switch and forward traffic according to user-specified QoS parameters.

By offering customers service level agreements (SLAs) based on guaranteed QoS, carriers can generate new sources of revenue. At the same time, customers will enjoy the appropriate level of service for their particular traffic, including real-time audio and video, interactive transaction processing, file transfer, telecommuting and more.

Hardware Specifications for Switching and Control Module
Dimensions Height: 15 in. (38.1 cm) Width: 1.06 in. (2.69 cm) Depth: 5 in. (12.7 cm) Weight 2.5 lbs Power requirements 37.4 W		Operating requirements Temperature: 32° to 122° F (0° to 40° C) Relative Humidity: 10% to 95% (noncondensing) Operating Altitude: Up to 10,000 ft (3050 m) EMC/RFI compliance FCC Part 15 Class A, CISPR Class A		Management interfaces RS-232 serial port, 10/100BaseT Ethernet Expansion slot One PCMCIA slot for upgrades or configuration parameter storage Switching fabric 64 x 64 nonblocking