Managing Multiplexers
1-3
6800-A2-GB21-10
August 1994
Overview
The 6800 Series Network Management System (NMS) supports the AT&T Series 700
Multiplexers. These multiplexers include the following types:
•
DATAPHONE
r II 719/72x NETWORKER
•
DATAPHONE II 724/735 Multiplexers
•
731/740/741/742 ACCULINK
r Multiplexers
•
745 ACCULINK Multiplexer
•
764 ACCULINK Multiplexer
In this document the 764 multiplexer is referred to as a 74x-56K multiplexer.
The NMS provides only partial support for the 74x-56K multiplexer and for 740 and
745 multiplexers with feature packages 3.5.1 and 4.2.1, respectively, and later. Some
multiplexer commands must be executed via External Systems cut-through.
NOTE
The 6800 Series NMS does not provide command support for the
719/72x NETWORKER, or the 724/735 multiplexers. Access to
diagnostics and configuration commands for these products from
the 6800 Series NMS is via External System cut-through to their
terminal interfaces.
NMS Ports Used by Multiplexers
Before the hardware connections between the NMS host computer and the ACCULINK network
are completed, you must configure the ports on one or more of these local multiplexers to send and
receive specific information about all the multiplexers in the network. This configuration process
is performed from a series of multiplexer software menus accessed via a terminal or a personal
computer (PC) that you temporarily connect to the multiplexer.
The 6800 Series NMS communicates with the multiplexers via user-configurable port connections
on the NMS. These port connections are used for the event port, the command port, and the
external systems ports. The following three ports are used to communicate with AT&T Series 700
Multiplexers.
Event Port
An event port establishes communications between the NMS host and either an
ACCULINK multiplexer or a 719 NETWORKER. This is a one-way communication link
that allows event/alarm information to be sent to the NMS host from the nodes.
Command Port
This is a two-way communications port used to send commands to the multiplexer
network and to receive results coming back into the NMS. A command port establishes
communications between the NMS host and the ACCULINK network.
