...................................................................................................................................................................................................................................

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.

BTS

UMTS/Mobile

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.

365-312-801R7.2

Issue 3, May 2007

Enterprise

SME

E-1

Third

BTS

Party

E-1

NTU

Local loop (Copper lines)

E-1's

Third

Party

NTU

Alcatel-Lucent - Proprietary

See notice on first page

Third

Party

NTU

SHDSL

Metro AM

= Equipped as Metropolis AM or

Metro AM

Metropolis

Metropolis AMS

Metro AM

SDH

Access Ring

3-11

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Shdsl Applications - Alcatel-Lucent 1643 AMS Applications And Planning Manual