PCSI announces enhancements to its Access Plus 100 Integrated Access Multiplexer.SAN DIEGO--(BUSINESS WIRE)--Jan. 23, 1995--Pacific Communication Sciences Inc. (PCSI PCSI Pacific Communication Sciences, Inc. PCSI Patient Classification Systems International PCSI Pakistan Cotton Standard Institute PCSI Perfect Channel State Information PCSI Polymer Coatings and Surfacings Institute ) a wholly owned subsidiary Wholly Owned Subsidiary A subsidiary whose parent company owns 100% of its common stock. Notes: In other words, the parent company owns the company outright and there are no minority owners. of Cirrus Logic (company) Cirrus Logic - A manufacturer of integrated circuits including the Advanced RISC Machine and display interface processors and cards for use as Windows accelerators (requiring dedicated driver software). http://cirrus.com/. Inc. (NASDAQ NASDAQ in full National Association of Securities Dealers Automated Quotations U.S. market for over-the-counter securities. Established in 1971 by the National Association of Securities Dealers (NASD), NASDAQ is an automated quotation system that reports on :CRUS crus (krus) pl. cru´ra [L.] 1. leg (1). 2. a leglike part. crus ce´rebri ) Monday announced enhancements to its Access Plus 100 Integrated Access Multiplexer. Additional functionality includes: digital T1 and E1 PBX (Private Branch eXchange) An inhouse telephone switching system that interconnects telephone extensions to each other as well as to the outside telephone network (PSTN). interfaces, capacity to compress up to 30 voice channels in a single unit, support for industry-standard voice compression algorithm G.728/LD-CELP, and hybrid circuit/packet data multiplexing. These enhancements will further increase the appeal of consolidating wide-area remote office voice, data and fax traffic into a single comprehensive wide area network. The Access Plus 100's new digital subscriber interface supports 24 to 30 channels of voice traffic over a single T1 or E1 PBX connection. The digital interface provides a number of benefits versus analog voice channel termination: quality is perceptibly improved by transporting voice traffic end-to-end entirely in digital format over a wide area link, termination is simpler and more efficient since many channels can be supported over a single line, and in many cases the cost of termination equipment on the PBX as well as the Access Plus 100 itself will be less expensive than terminating the equivalent number of single-user, analog voice lines. The benefits of digital voice channel termination are equally attractive in terrestrial and satellite applications. In the Access Plus 100 digital voice compression modules, 40-MIPS digital signal processors provide approximately twice the performance of equipment offered in competitive voice/data multiplexers. This additional power allows the Access Plus to support LD-CELP LD-CELP Low Delay-Code Excited Linear Prediction toll-quality voice transport in one quarter the bandwidth of standard voice channels. With 40-MIPS DSPs, PCSI is also able to enhance CELP (Code Excited Linear Predictive) A speech compression method that achieves high compression ratios along with toll quality audio. LD-CELP (Low-Delay CELP) provides near toll quality audio by using a smaller sample size that is processed faster, resulting in compression algorithms delivering a combination of higher quality voice compression at lower transmission rates than could previously be achieved. As with other Clarity Series voice modules, GIII GIII Gasherbrum III (26,089 ft. mountain near Pakistan-China) fax transmissions are automatically and transparently supported at the highest valid rate at or below the programmed voice channel rate. Access Plus 100 data channels can be individually assigned to packetize data or to pass data transparently in TDM (Time Division Multiplexing) A technology that transmits multiple signals simultaneously over a single transmission path. Each lower-speed signal is time sliced into one high-speed transmission. mode. By filtering out idle characters and allocating bandwidth only when data is actually being transmitted, the Access Plus 100 aggregate throughput is greatly increased in packet mode transport. For protocol transparency or extremely time-sensitive applications, data channels on the Access Plus 100 can be configured for constant bit-rate/TDM data transport. According to customers who have taken advantage of the hybrid data capability, the Access Plus 100 operates well in multi-protocol environments. "The Access Plus 100 was essential to Canover's network requirements because it maintained both time-division and statistical multiplexing simultaneously," stated Jeffrey Eisenberg, Network Administrator for Canover Industries Inc., a major distributor of office, industrial and packaging supplies. "Due to that ability, we were able to support both a RISC-based RS6000 and a Qantel system through the same 56 kbps line." The flexibility to select transport mode for each data port individually allows network managers to optimize bandwidth allocation for each type of traffic according to delay, throughput and cost parameters. The Access Plus 100 supports data rates from 1200 bps to T1/E1 speeds. Synchronous and asynchronous Refers to events that are not synchronized, or coordinated, in time. The following are considered asynchronous operations. The interval between transmitting A and B is not the same as between B and C. The ability to initiate a transmission at either end. data connections for all types of data devices, including bridges, routers, controllers, terminals, and FEPs, are supported. PCSI will demonstrate its enhanced Access Plus 100 integrated access multiplexer at this month's Communications Networks `95 exhibition in Washington, D.C., from Jan. 24 to Jan. 26 in Booth 256. PCSI holds the ISO (1) See ISO speed. (2) (International Organization for Standardization, Geneva, Switzerland, www.iso.ch) An organization that sets international standards, founded in 1946. The U.S. member body is ANSI. 9001 Quality System Certificate, the most comprehensive award in the ISO 9000 series, covering the design, development, manufacture and service of wireless and wireline digital and analog communications access systems. PCSI has its headquarters in San Diego. The company is a leading developer and manufacturer of corporate internetworking products and wireless communications solutions. PCSI's Clarity Series products are sold through a worldwide network of systems integrators and full-service distributors. CONTACT: Pacific Communication Sciences Inc., San Diego Kim Gower, 619/535-9500 |
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