Description: 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.