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Siemens Claims to Have Launched First Commercially Available DSL Card with SHDSL.

German contractor Siemens Information and Communication Networks has launched what it claims to be the first commercially available digital subscriber line (DSL) telecommunications card that incorporates single-pair, high speed digital subscriber line (SHDSL) technology. As such, the device is based on standard pulse code amplitude modulation (PAM) 16 line code and supports transmission rates of 192 kbit/s to 2.32 Mbit/s in both directions (symmetrical) over one copper line. A major application for the approach is in DSL voice transmission applications and that in contrast with the asymmetric digital subscriber line (ADSL) approach, the SHDSL end user does not require the services of a plain old telephone service/integrated services digital network splitter, since voice signals are transported in asynchronous transfer mode (ATM) using an inband signal. This can be taken to mean that a voice signal is segmented in the same way as a data signal, is transmitted as an ATM packet and is reassembled in the receivi ng terminal. The SHDSL approach can also be used in conjunction with ADSL technology.

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Title Annotation:International Pages; Siemens Information and Communication Networks
Comment:Siemens Claims to Have Launched First Commercially Available DSL Card with SHDSL.(Siemens Information and Communication Networks )(International Pages)
Author:Streetly, Martin
Publication:Microwave Journal
Article Type:Brief Article
Geographic Code:4EUGE
Date:May 1, 2001
Words:175
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