Alcatel-Lucent 1643 AMS User's Operation Manual page 693

Glossary
Integrated Transport Management Craft Interface Terminal (ITM-CIT)
Local manager for SDH network elements in a subnetwork. Also called as Craft
Interface Terminal.
Intelligent Synchronous Multiplexer (ISM)
A network multiplexer that is designed to flexibly multiplex plesiochronous and STM-1
tributary port signals into STM-1 or STM-4 line port signals.
Intermediate System (IS)
A system that routes/relays management information. An SDH network element may be a
combined Intermediate and end system.
IPS
Inter Processor Status
IS
In-Service
IS-IS Routing
The network elements in a management network, route packets (data) between each other
using an IS-IS level protocol. The size of a network that is running IS-IS Level 1 is
limited, and therefore certain mechanisms are employed to facilitate the management of
larger networks. For STATIC ROUTING, it is possible to disable the protocol over the
LAN connections and thereby effectively cause the management network to be
partitioned into separate IS-IS Level 1 areas. In order for the ITM-SC to communicate
with a specific network element in one of these areas, the ITM-SC must identify the
Gateway network element through which this specific network element is connected to
the LAN. All packets to this specific network element are routed directly to the Gateway
network element by the ITM-SC, before being re-routed (if necessary) within the Level
1 area. For DYNAMIC ROUTING an IS-IS Level 2 routing protocol is used that allows
a number of Level 1 areas to interwork. The network elements that connect an IS-IS area
to another area are set to run the IS-IS Level 2 protocol within the network element and
on the connection to other network elements. Packets can now be routed between IS-IS
areas and the ITM-SC does not have to identify the Gateway network elements.
ISDN
Integrated Services Digital Network
ISO
International Standards Organisation
ITM-SC Administrator
See ITM-SC System Administrator.
ITM-SC System Administrator
A user of the ITM-SC application with System Administrator privileges. See also User
Privilege.
ITU
International Telecommunications Union
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365-312-807R7.2
Issue 4, May 2007
Alcatel-Lucent - Proprietary
See notice on first page
GL-13