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January 29, 2002
SHELTON, Conn. -- TranSwitch Corporation (NASDAQ: TXCC) today announced the introduction of the TXC-04226 EtherMap(TM)-3, a VLSI solution for full-duplex mapping of Ethernet traffic into the SONET/SDH transport network. The EtherMap-3 supports eight 10/100 Ethernet ports or one Gigabit Ethernet port to deliver a broad range of both SONET/SDH and Ethernet processing functionality. By incorporating both the new standardized link layer framing protocols, GFP (Generic Framing Procedure), LAPS (Link Access Procedure for SDH) and LAPF (Link Address Procedure Framed-mode) and the new virtual concatenation (VC) standards, the EtherMap-3 will allow service providers and end customers to meet the increased demand for emerging private line Ethernet transport and Transparent LAN services in the Metro Access/Edge environment. As the first device in the industry to combine several unique bandwidth allocation features and framing protocols, the EtherMap-3 provides the mechanisms for flexible transport of Ethernet streams over SONET/SDH along with dynamic channel assignment granularity. By incorporating an Ethernet Media Access Control (MAC) function, a sophisticated buffering strategy, 84 channel VT/TU ( Virtual Tributary / Tributary Unit) mapping, VC-3/VC-4 mapping and virtual concatenation, the EtherMap-3 can provide intelligent flexible broadband multi-megabit Ethernet services over SONET/SDH. The EtherMap-3 provides both high and low order path overhead processing for SONET/SDH channels and connects to upstream SONET/SDH overhead termination devices through a byte parallel 19.44 MHz Telecom Bus interface for STM-1/STS-3/STS-3c payloads. TranSwitch Corp.
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