Data Connection's ATM Signalling product achieves call set-up rates inexcess of 2500 calls per second.LONDON--(BUSINESS WIRE)--April 23, 1997--Data Connection today announced that in recent performance tests, DC-Signalling V1.0, its Asynchronous Transfer Mode See ATM. (communications) Asynchronous Transfer Mode - (ATM, or "fast packet") A method for the dynamic allocation of bandwidth using a fixed-size packet (called a cell). See also ATM Forum, Wideband ATM. ATM acronyms. Indiana acronyms. (ATM) signalling product, achieved a call setup rate of 2560 calls per second. The performance tests were designed to be as independent as possible of the underlying hardware, and to be easily repeatable. To do this, the tests were executed on a standard PC using a 90MHz (MegaHertZ) One million cycles per second. It is used to measure the transmission speed of electronic devices, including channels, buses and the computer's internal clock. A one-megahertz clock (1 MHz) means some number of bits (16, 32, 64, etc. Intel Pentium processor and running Microsoft Windows See Windows. (operating system) Microsoft Windows - Microsoft's proprietary window system and user interface software released in 1985 to run on top of MS-DOS. Widely criticised for being too slow (hence "Windoze", "Microsloth Windows") on the machines available then. NT. In this environment, DC-Signalling required just 0.39ms of CPU time The amount of time it takes for the CPU to execute a set of instructions and generally excludes the waiting time for input and output. CPU time - processor time to process all of the ATM messages required to establish a UNI 3.1 call (SETUP, CALL_PROCEEDING, CONNECT, CONNECT_ACK (ACKnowledgment code) The communications code sent from a receiving station to a transmitting station to indicate that it is ready to accept data. It is also used to acknowledge the error-free receipt of transmitted data. Contrast with NAK. 1. ). "Signalling has historically been seen as a bottleneck in the performance of ATM switches. This announcement is significant, as it demonstrates that with the right software it is possible to achieve much higher call setup rates than is achieved by the current generation of ATM switches", said John Palombo, Director of Data Connection's ATM Business Unit. "We were particularly pleased to achieve such high call setup rates. Performance was one of the key design criteria for DC-Signalling, along with low per-call data occupancy, and resilience to all failures in the network or the local machine", he continued. "The real importance of this result is that vendors using DC-Signalling can focus their performance tuning on the other components within the switch, as the signalling software is no longer the main system bottleneck. This in turn enables our licensees to make huge improvements in the price/performance of their products, so saving end users money, and improving response times in busy networks." DC-Signalling can be used in conjunction with Data Connection's other portable ATM products, DC-Call Control, DC-PNNI and DC-ILMI, to provide the core ATM control software in an ATM switch. The products are all written so that it is very straightforward to distribute functional components across multiple processors or cards. This means that in multi-processor systems, it is possible to achieve even higher levels of performance, without having to modify the protocol software provided by Data Connection in any way. Data Connection Limited (DCL (1) (Digital Command Language) Digital's standard command language for the VMS operating system on its VAX series. (2) (Data Compression L ) is the leading independent developer and supplier of ATM, Data Conferencing, Messaging, Directory and SNA (Systems Network Architecture) IBM's mainframe network standards introduced in 1974. Originally a centralized architecture with a host computer controlling many terminals, enhancements, such as APPN and APPC (LU 6. portable software products, with customers including Hewlett-Packard, IBM (International Business Machines Corporation, Armonk, NY, www.ibm.com) The world's largest computer company. IBM's product lines include the S/390 mainframes (zSeries), AS/400 midrange business systems (iSeries), RS/6000 workstations and servers (pSeries), Intel-based servers (xSeries) Corp., Lotus, Microsoft, and large end-users such as banks, governments and airlines. Data Connection is headquartered in London UK, with US offices in Virginia. It was founded in 1981 and is privately held. During each of the past 15 years its profits have exceeded 20% of revenue. Last year, sales were approximately $21M, of which over 80% were in the US. Data Connection is a trademark of Data Connection Limited (UK) and Data Connection Corporation (US). All other trademarks are the property of their respective owners. CONTACT: Data Connection Tony Downes: PR Director : td@datcon.co.uk John Palombo, Director, ATM Business Unit jp@datcon.co.uk Phone: 44 181 366 1177 URL URL in full Uniform Resource Locator Address of a resource on the Internet. The resource can be any type of file stored on a server, such as a Web page, a text file, a graphics file, or an application program. : http://www.datcon.co.uk |
|
||||||||||||||
Printer friendly
Cite/link
Email
Feedback
Reader Opinion