SHDSL applications

E1 over SHDSL

For locations that cannot be reached via fiber, the 1643 AM/1643 AMS offer an SHDSL extension option board. This allows the transmission of E1s in a frame structure over copper lines. Distances of up to 3.5 km can be reached. The E1s are either directly mapped to the SHDSL structure or first mapped into a TU-12 and then into SHDSL. The latter allows full SDH path monitoring for the path which is terminated in the SHDSL Network Termination Unit (NTU). The 12 SHDSL ports on the 1643 AM/1643 AMS option board allow for a cost effective solution.

Alcatel-Lucent supports a variety of E1 and TU-12 third party NTU modems.

Ethernet over SHDSL

Ethernet data can be transmitted over SHDSL by using a third party TU-12 NTU modem. The data are first mapped into a TU-12 and then into the SHDSL structure according to GFP mapping. Two examples are shown in the figure below. The 1643 Access Multiplexer AM/1643 Access Multiplexer Small AMS facilitate the transmission of Ethernet data from an NTU via the SDH network to another NTU. But they provide also the compatibility for a connection between an NTU and the Ethernet option cards X4IP, X5IP or X8PL within the 1643 Access Multiplexer AM/1643 Access Multiplexer Small AMS.

For a detailed description of enahnced SHDSL features, refer to Chapter 12, SHDSL Overview.

Alcatel-Lucent – Proprietary

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