Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
RFL Electronics IMUX Ap-Note 15.
Parameters pertaining to the DS1 port are stored within the Common
Module containing that port interface. That is, in a Drop-and-Insert shelf,
DI-A is programmed with parameters for port A, while DI-B holds settings
for port B. In a Terminal shelf, DS1 configuration is contained within the
Terminal Module.
Control and storage location of configuration for the DS0 Channel Modules
depends on the type of the module and its mode of operation.
CHANNEL MODULE CONFIGURATION.
"DUMB" MODULES.
"Dumb" modules have no facilities to communicate with or to be controlled
by the Common Module. They are set up by means of DIP-switches on
board.
The Common Module is not aware of the existence of such channel modules.
All configuration is contained entirely within a "dumb" module and any
reprogramming or resets of the shelf do not affect it.
Network Management System (NMS) cannot detect such modules
automatically - they must be entered manually into network configuration
files.
"SMART" MODULES.
"Smart" modules are able to communicate with the Common Module.
Typically they can be set up by means of DIP-switches on board or can
accept configuration commands from the Common Module.
The Common Module detects presence of "smart" Channel Modules and
reads their status, which includes local/remote mode setting. Common
Module maintains a Chart, listing "SCB Addresses" of all modules found in
shelf and their configuration.
SCB Addresses are set by DIP-switches on board of Modules and are used to
distinguish the cards within the shelf. For easier servicing, it is
recommended, but not required, that the SCB Address corresponds to
physical slot location of the module.
SCB Address is an identifier pertaining only to backplane communications
with the Common Module and has nothing to do with TX/RX address of DS0
payload data, used by some "addressable" Channel Modules - such as DS-
562I or TMX/TMR.
apnote15 page: 2 of 8 rdw revised 08/30/2001 printed 11/1/2006
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