This MIB module serves as an enterprise-specific extension of
the ADSL-LINE-MIB.  The structure of this MIB module shadows
the structure of the ADSL-LINE-MIB, table for table.  The tables
defined by this MIB module contain managed objects that meet the
following criteria:
        
1)  A managed object represents an attribute or characteristic
    specific to CAP (Carrierless AM/PM) modems.
        
2)  The ADSL-CAP-LINE-MIB does not already contain a managed
    object representing the same information as this managed
    object.
        
Observe that entries contained by the tables in this MIB module
do not augment the corresponding entries in the ADSL-LINE-MIB,
as every modem represented by the ADSL-LINE-MIB is not
necessarily a CAP modem.
        
Also observe that entries contained by the tables in this MIB
module do not augment the corresponding entries in the
ADSL-CAP-LINE-MIB, as this assumes that the ADSL-CAP-LINE-MIB
defines tables that correspond to every table defined by the
ADSL-LINE-MIB.  At this time, this assumption does not hold
true.
        
*** ABBREVIATIONS, ACRONYMS, AND SYMBOLS ***
        
ADSL - Asymmetric Digital Subscriber Line.
        
ATM - Asynchronous Transfer Mode.
        
ATU-C - ADSL Transceiver Unit, Central Office end.
        
ATU-R - ADSL Transceiver Unit, Remote terminal end.
        
BER - Bit Error Ratio.
        
CAP - Carrierless Amplitude Modulation / Pulse Modulation.
        
DSL - Digital Subscriber Line.
        
SNR - Signal-to-Noise Ratio.
        
STM - Synchronous Transfer Mode.
        
*** DEFINITIONS ***
        
DOWNSTREAM
    The flow of data in the direction from the ATU-C to ATU-R.
        
MARGIN (also referred to as 'SNR margin')
    The difference between the SNR of the received signal and
    the SNR required to provide a BER of 10E-7.
        
SYMBOL
    The number of bits the transmitter is capable of
    multiplexing and modulating in a single signalling interval.
        
SYMBOL RATE
    The rate at which all symbols are transmitted.
        
UPSTREAM
    The flow of data in the direction from the ATU-R to ATU-C.