SDL Communications Introduces Enhanced, Low Cost Single, Dual or Quad Port T1/E1 WAN Adapters for PCI Bus

SDL Communications, the global leader in high-performance wide area networking (WAN) adapters, today announced the availability of its WANic 520/560 Line, a new family of PCI WAN adapters that support single T1, quad T1, single multi-interface (X.21, V.35 and EIA-530) and quad multi-interface. The following products are included in SDL's latest WANic 520/560 product line: WANic 521: Single port multi-interface (V.35, X.21, RS232) adapter WANic 522: Dual port multi-interface (V.35, X.21, RS232) adapter WANic 524: Quad port multi-interface (V.35, X.21, RS232) adapter WANic 561: Single port T1 adapter with CSU/DSU interface WANic 562: Dual port T1 adapter with CSU/DSU interface WANic 562-MI: Single multi-interface adapter with T1 CSU/DSU interface WANic 564: Quad port T1 adapter with CSU/DSU interface Based on a modular design that features a common base adapter and a family of physical interface modules, the WANic 520/560 Line offers a provision for two interface option (I/O) modules. Featuring a low latency PCI interface and a Quad Multi-protocol Controller (QMC4) that supports 4 full duplex ports at 4 Mbps each, the WANic 520/560 Line is designed to burst into host memory at 132 MBps and support an aggregate full duplex speed of 16 Mbps. The CompactPCI and PMC versions of this line of adapters are currently in development and planned for release in 2000. "The WANic 520/560 Line reflects a new and improved modular design for the T1/E1 adapter that is designed to offer our customers the features and benefits needed to increase cost efficiency and to facilitate the OEM product integration process," comments Jeffrey Marden, Director of Engineering at SDL Communications. Software Support The WANic 520/560 Line provides driver support for VxWorks®, Windows NT® and popular versions of UNIX®. In addition, WAN protocol stacks for Frame Relay and PPP are offered with this new line of products. As with all SDL products, the WANic 520/560 Line is available with a comprehensive Driver Development Kit (DDK) that contains a comprehensive Application Programming Interface (API), sample code, diagnostics and support documentation. The DDK complements SDL's CP/2 TM product design architecture and is designed to reduce required OEM integration time and speed new product introduction. CP/2 Architecture: Industry Leading Approach to Hardware and Software Design Targeted for use in applications such as convergence networking platforms, router interfaces, integrated access devices, satellite transmitters/receivers and WAN test equipment, the WANic 520/560 Line is a product of SDL's CP/2 Architecture. CP/2 Architecture is a modular approach to hardware and software design that utilizes common components, interfaces, hardware platforms and software drivers to develop WAN adapters. Key benefits of this design approach include: (1) Reduced time to market for new adapters incorporating emerging technologies, (2) Maximum reliability and cost-efficiency, (3) Minimal integration and configuration time, (4) Use of industry standard I/O modules that provide a wide range of interface options, and (5) Ability to leverage a variety of applications and protocol stacks. About SDL Communications SDL Communications, Inc. is the global leader in the design and manufacture of advanced wide area network adapters and communication software protocols for use in networking platforms and devices. Recognized as the leading provider of WAN interfaces, SDL offers a complete line of networking products designed for use by leading technology companies, system integrators, and Internet Service Providers (ISPs) in system level products. SDL's WAN adapters are typically implemented in high-performance multiprotocol routers, WAN servers (e.g. Internet Access Platforms and Server Based Remote Access Devices), WAN test equipment, FRADs, wireless CPE, satellite applications and Integrated Access Devices (IADs). Established in 1987, SDL Communications has grown into the premier developer of WAN adapters for PCI, CompactPCI and PMC systems. Most recently, SDL has been focused on developing products for emerging technologies such as PPP, Frame Relay and Asynchronous Transfer Mode (ATM). SDL's customer base includes technology leaders such as Nortel Networks, IBM, Motorola, Nokia, ITT, Compuware, GE and Network Associates. More information on SDL Communications and its products is available at