ADC MM702G Manuel D’Utilisation

The DSL parameters set up the G.shdsl communication between the modem and a DSLAM or 
between two modems used in a point-to-point application. Typically, the DSL parameters for 
the modem are preset to immediately synchronize with the service provider (DSLAM 
application). However, you may be instructed to make changes to the DSL configuration. This 
chapter provides information for setting G.shdsl parameters when the modem is in an 
application as a DSLAM endpoint. For instruction on setting up G.shdsl parameters for a 
point-to-point modem application, go to 

The following are configurable DSL parameters for the G.shdsl modem; change parameters 
only when instructed to do so by the service provider or your system administrator.

❑

The operating mode choices are Remote (use when the modem is an endpoint for a DSLAM 
application or the customer-side modem in a point-to-point application) or Central-Office 
(use only for the central office-side modem in a point-to-point application)

❑

Annex A or B provides the appropriate operating characteristics for G.shdsl, dependent on 
your geographical location.

❑

A margin value, in decibels, that must be met to initialize modem.

❑

Either fixed or adaptive mode that the modem will use to negotiate the best transmission 
rate at which both ends of the connection can synchronize.

❑

Wire pair mode, either Single (two-wire) or Dual (four-wire), can be selected only for the 
MM702G modem. The MM701G modem is used only in Single mode.

❑

PSD mask is either symmetric or asymmetric. The values used to calculate the asymmetric 
mask are dependent on the Annex A or B you selected.