Multiplexer Access Security; Nms Access Security For Multiplexers; Multiplexer Security Through The Nms External Systems Interface - Paradyne COMSPHERE 6800 Series Multiplexer Management And Configuration Manual

The terms Link, Logical Link and Supervisory Data Link are used throughout this manual as
follows:

Multiplexer Access Security

Access to the multiplexers in the network is achieved via user access security in the NMS and can
also be set up via Level I, II, and III password security within the multiplexer network when you
directly access a node from NMS using the External Systems task.

NMS Access Security for Multiplexers

Access security in the NMS to the network is achieved by regulating each user's access to network
devices and to NMS commands.
User access levels are assigned or modified using the Create User Profile (crup) or Edit User
Profile (edup) commands, respectively, from the Manager task.

Multiplexer Security through the NMS External Systems Interface

The ACCULINK multiplexers in the network have their own built-in security system that uses
three tiers of passwords: Level I, Level II, and Level III. These password levels basically
correspond respectively to the command access levels — Manager, Data Technician, and Help
Desk.
The NMS internally uses the Level I password to communicate with the multiplexers. Therefore,
all of the multiplexers in the network must be configured with the same password for Level I. If
you change the Level I password of the nodes in the network, you must inform the NMS by
executing the Change Node Passwords (chnp) command. The Level I password should be known
only by the System Administrator and other personnel who require complete access to the
ACCULINK multiplexer network.
When you access a node via the NMS External Systems task, you are required to enter a password.
To restrict users from access, you can configure the multiplexer with Level II and Level III
passwords and inform the appropriate users of the passwords. You may only configure multiplexer
Level I, II, and III passwords through the terminal interface or the NMS External Systems
interface.
For more information on multiplexer security, refer to the user's manual that came with your
multiplexer.
6800-A2-GB21-10
A link is a generic term used to describe the termination of a facility (the digital path
between nodes) at a node. When a facility terminates at a 731/740/741/742 or 74x-56K
multiplexer, the link is called an aggregate link. When the facility terminates at a 745
multiplexer, it is a T1 link.
A logical link is a term used to describe the logical assignment of time slots between two
nodes through an intervening network of foreign cross-connect devices.
Supervisory Data Links (SDLs) are the connections that are used to pass network control
data between nodes.
August 1994
Managing Multiplexers
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