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Data Connection Announces DC-SIP Protocol Software

Product family provides OEMs with portable, scalable, fault-tolerant source code for carrier-class SIP products

London, UK: April 10, 2001. Data Connection Limited (DCL), the world's leading provider of communications protocol source code, today announced the availability of its DC-SIP product, which provides customers with a high-quality implementation of the SIP protocol.

DC-SIP can be easily combined with DCL's MGCP, Megaco, SCTP, ATM and MPLS offerings to provide customers with a one supplier solution for their entire carrier-class networking protocol requirements.

SIP (Session Initiation Protocol) is an important and evolving protocol for initiating interactive communication sessions between users. The uses for such sessions include voice, video, chat and instant messaging, as well as interactive games and virtual reality. It is a protocol developed by the MMUSIC and SIP working groups of the IETF and is an alternative to the ITU Recommendation H.323. It is a text-based protocol based on HTTP that is more lightweight and general-purpose than H.323. SIP can be used to control Internet multimedia conferences, Internet telephone calls and multimedia distribution. It is envisaged that SIP will be used in both the core and the periphery of the future communications network.

The new DC-SIP product provides OEMs with a flexible source code solution with the same high quality architecture and support for which DCL's other communications software is renowned. DC-SIP runs within DCL's existing high performance portable execution environment - the N-BASE. This provides extensive scalability and flexibility and enables the distribution of protocol components across different hardware configurations. The N-BASE has been ported to a large number of operating systems including VxWorks, pSOS, Chorus, Nucleus, OSE, Solaris, Linux, HP-UX, and Windows NT, and has been used on all common processors including x86, i960, Motorola 860, Sparc, IDT and MIPS. Proprietary OSs and chipsets can be supported with minimal effort. In addition, pre-ported solutions are available on a range of operating systems including VxWorks, Solaris and Windows.

DC-SIP is a high function, flexible, portable protocol product, which provides OEMs with a quick and easy way to build devices running SIP for a variety of applications.

  • The breadth of interfaces and features enables the rapid development of intelligent end-point applications, such as IP telephones and universal messaging systems.
  • It provides the scalability and distributability required by SIP Application Servers and SIP servers that manage SIP traffic within a network providing location, proxy, authentication and authorization services.
  • Carrier-class reliability guarantees an ideal platform for embedded gateways between heterogeneous networks, such as IADs and Trunking Gateways.
  • DC-SIP's architecture enables highly-available systems, such as those required for Softswitches and Call Agents, both for backbone signaling and residential gateway signaling.

DC-SIP provides support for all the relevant IETF SIP Working Group drafts and RFCs and other key standards, including those for carrying encapsulated traditional telephony signaling protocols within SIP (SIP-T). The rich feature set gives DC-SIP the performance, scalability and reliability required for the most demanding telecoms applications.

"SIP is becoming an important protocol for telephony hardware," said Matthew Finlayson, Manager of Data Connection's Voice Networking Group. "We are seeing increasing interest in deploying SIP to build carrier-class Voice over IP networks - both as a backbone signaling protocol (between switches) and as an access protocol for gateways."

"The market place requires products that can provide the levels of performance, robustness and availability that we expect from the telecoms infrastructure. DC-SIP has been designed from day one to guarantee these features, allowing our customers to develop highly-available solutions and to get to the market as quickly as possible. OEMs rely on our products and expertise to meet service providers' most stringent quality and reliability requirements. They also get the benefit of our continuing product development and an easy upgrade path to new features."

About Data Connection Limited

Data Connection Limited (DCL) is the leading independent developer and supplier of ATM, MPLS, MGCP/Megaco, SCTP, SIP, SS7, Conferencing, Unified Messaging, Directory and SNA portable products. Customers include 3Com, Cabletron, Cisco, Fujitsu, Hewlett-Packard, Hitachi, IBM Corp., Lucent, Microsoft, Nortel Networks, NCR, SGI and Sun. Data Connection is headquartered in London UK, with US offices in Reston, VA and Alameda, CA. It was founded in 1981 and is privately held. During each of the past 19 years, its profits have exceeded 20% of revenue. Last year sales exceeded $30M, of which 90% were outside the UK, mostly in the US, leading to the company's second Queen's Award for outstanding export performance.

For information, contact Matthew Finlayson by email at , phone +44 20 8366 1177, or visit our Web site at http://www.dataconnection.com.

Data Connection is a trademark of Data Connection Limited and Data Connection Corporation. All other trademarks and registered trademarks are the property of their respective owners.