The tables defined by this MIB module contain a collection
of managed objects that are general in nature and apply to
different types of modems. The structure of this module
resembles the  ADSL-LINE-MIB, CISCO-SDSL-LINE-MIB, 
ADSL-DMT-LINE-MIB, CISCO-ADSL-DMT-LINE-MIB, etc. 
Observe that the tables in this module do not necessarily
extend the tables defined by the these mibs. Currently,
only the table that contains the configuration information 
extends the profile tables defined by the above modules. 

Mib objects must fulfill the following criteria to be
contained in this mib module:

1)  The ADSL-LINE-MIB or the modem specific mibs such as
    CISCO-SDSL-LINE-MIB, CISCO-ADSL-DMT-LINE-MIB, etc.
    does not already contain a managed object
    representing the same information.

2) The mibs object must NOT be technology dependent, they 
   must apply to various types of DSL modems,
   e.g. IDSL, SDSL, ADSL, etc.  

*** ABBREVIATIONS, ACRONYMS, AND SYMBOLS ***

ADSL - Asymmetric Digital Subscriber Line.

ATM - Asynchronous Transfer Mode.

XTU-C - xDSL Transceiver Unit, Central Office end.

XTU-R - xDSL Transceiver Unit, Remote terminal end.

BER - Bit Error Ratio.

BERT - Bit Error Ratio Test.

DSP - Digital Signal Processor.

DSL - Digital Subscriber Line.

IDSL - IDSN Digital Subscriber Line.

SDSL - Symetric Digital Subscriber Line.

xDSL - Group term used to refer to ADSL, HDSL, SDSL, VDSL,
       IDSL, etc. All are digital technologies using existing
       copper lines provided by the thelephone companies.