ADC MM701G User Manual download pdf (Page 65)

MM701G and MM702G User Manual 57

CONFIGURING DSL PARAMETERS

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 Chapter 7, “Implementing a Point-to-Point LAN

Extension.”

BEFORE YOU BEGIN. . .

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.

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ADC MM701G User Manual Page 65