Alcatel-Lucent 1643 AMS Applications And Planning Manual page 251
Access multiplexer am / access multiplexer small
ams(formerly metropolis am/ams.
release 1.0 through 7.2
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Also See for 1643 AMS:
- User's operation manual (724 pages) ,
- Operation manual (386 pages) ,
- Installation manual (278 pages)
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SHDSL Overview
NTU management
The third party NTU modems can be managed remotely. For this purpose a
communication channel is reserved in the SHDSL overhead, called the EOC
(Embedded Operations Channel). The message set ist defined in ITU-T Rec. G991.2.
This message set deals with SHDSL layer aspects. Additionally there is a proprietary
extension, here called EOC- ext. which addresses the non-SHDSL aspects of modem
management. This proprietary message set enhances the standard EOC messages by
messages covering the interface towards the end-user.
Naming system for SRUs and NTUs
The LTU can manage up to 12 NTUs and 24 SRUs. In order to identify the particular
SRU or NT quickly, a fixed naming scheme is to be used for NTU and SRU
identification on the GUIs that allows easy recognition of the relative location of the
device:
Each NTU or SRU is identified with a four digit number prefixed with a string "SRU"
or "NTU" depending on the object that is addressed.
The first digit indicates the slot number in which the SHDSL unit is inserted in the
LTU. For 1643 Access Multiplexer AM / 1643 Access Multiplexer Small AMS this
value is "2".
The following two digits indicate the LTU port number, ranging from 01 to 12,
corresponding with the TP 1 to TP12 numbering that is used on the X12 SBDSHL
faceplate.
The last digit can be "1", "2" or "3". The "1" is used for the NTU, while "2"and "3"
are used for numbering the SRUs, starting from the SRU connected to the LTU and
numbering incrementally in the direction of the NTU.
For NT10ETH NTUs, the LTU port number connected to NTU port #1 is used.
The following figure shows an example for the name assignment:
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365-312-801R7.2
Issue 3, May 2007
Alcatel-Lucent - Proprietary
See notice on first page
SHDSL configurations
12-5
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