Harris & Jeffries' Soft-ATMTM and High-Performance Frame RelayTM Signalling Software Subsystems Achieve in Excess of 8,000 Calls Per Second

Harris & Jeffries' Soft-ATMTM and High-Performance Frame RelayTM are the World's Highest Performance Signalling Software Subsystems

DEDHAM, MA — June 14, 1998 — Harris & Jeffries, Inc. (H&J), announced today results of performance testing of its Soft-ATMTM and High-Performance Frame RelayTM Signalling Software Subsystems. In measured tests, both H&J's Soft-ATM Signalling Software Subsystem and High-Performance Frame Relay Signalling Software Subsystems (HPFR SSS) sustained a call set-up rate over 8,000 calls per second (CPS), the highest CPS rating ever announced by any ATM or frame relay software vendor.

Demonstrations of this performance were shown in the Harris & Jeffries booth at the ATM Year '98 Exhibition at the San Jose Convention Center in San Jose, CA, June 1-5, 1998.

The tests were conducted as a result of customer requests for performance numbers as a way to compare ATM and frame relay Signalling Software. Testing was done by H&J engineers. Additional performance testing and evaluation was performed on Soft-ATM by a major test equipment manufacturer who achieved sustained call rates of over 1,500 CPS in a Pentium 90 powered ATM device.

The tests were designed to be an accurate representation of real-world ATM and frame relay deployment, and were designed to be easily reproduced. Using standard Soft-ATM Signalling Software Release 1.6, and HPFR Signalling Software Rel 2.0 and H&J's call handler, H&J achieved a call rate of over 8,000 CPS using a Pentium II 266 MHz workstation running Windows NT 4.0. H&J ran a series of tests in a software-only, loop-back environment. This performance exceeds the capacity of most commercial switches currently available. Each call set-up consisted of a SETUP, CONNECT and CONNECT_ACK.

Another method of deriving quantitative performance numbers for signalling software is mathematical modeling. Mathematical numbers are just that, hypothetical extrapolations of the maximum CPS possible in an environment of zero latency. Since all computer systems are subject to latency, mathematical extrapolations are not meaningful as a method of determining performance characteristics of a signalling stack. Nevertheless, H&J conducted mathematical models of Soft-ATM and High-Performance Frame Relay so that customers could equally compare theoretical signalling software performance. In mathematical tests, H&J signalling software achieved rates in excess of 10,000 CPS.

Code size and system resource requirements are far more important in determining actual performance characteristics of a given signalling stack. The signalling functionality in both the Soft-ATM and HPFR family of products is extremely compact and requires the least system resources of all commercially available signalling software. The company said these are the primary reasons for Soft-ATM's and HPFR's astounding performance.

"We are delighted with the results of these tests. While we always knew that Soft-ATM and HPFR had very high performance capabilities — having been designed to be compact, require minimal target system resources and provide exceptional performance characteristics — these results have exceeded even our expectations of its performance, and we are still tuning the software to produce significant performance gains," said Ethan Harris, president of Harris & Jeffries, Inc. "In a multiprocessor environment, we expect the performance numbers to increase substantially," Mr. Harris continued.

Performance CPS rates are an important factor for selecting products. The H&J signalling software performance is a reflection of its innovative and leading-edge architecture. But developers require more than just blazing performance; tools, support and a complete product line are also necessary. The Soft-ATM and HPFR Toolkits enable developers to examine the behavior of ATM and frame relay devices in real-time and facilitates maximizing performance characteristics of new products. In addition to high performance, H&J products are accompanied by a responsive support organization that is committed to achieving maximum performance while accelerating product time-to-market.

Comprehensive Family of ATM and Frame Relay Functionality

Harris & Jeffries' Soft-ATM and High-Performance Frame Relay product lines are the broadest in the industry. Whether product deployment occurs at the desktop, the enterprise backbone, or the CO switch, Harris & Jeffries delivers the functionality, tools, support and performance that accelerates product development. All Harris & Jeffries' software subsystems are standards compliant and come with H&J's Interoperability Guarantee.

The Soft-ATM product line includes ATM Signalling, ILMI, PNNI, IP over ATM, LAN Emulation Client, LAN Emulation Server (LES, BUS, LECS), Frame Relay-to-ATM Network Interworking (FRF.5), Frame Relay-to-ATM Service Interworking (FRF.8) Multi Protocol over ATM-Client and MPOA-Server. The High-Performance Frame Relay product line includes Frame Relay Signalling, Core Services, Frame Relay-to-ATM Network Interworking and Frame Relay-to-ATM Service Interworking subsystems. Harris & Jeffries also sells the UltraLinqTM line of internetworking products including the Connection Management Subsystem. To meet special customer requirements, H&J delivers custom engineering services through its Fast-Start ServicesTM group.

last update: 15.08.2008

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