ADC MM702G Manuel D’Utilisation

Standard Annex

Type 

 then select one of the following Annexes:

—

 for operating conditions typically found in the North American 

implementation of G.shdsl

—

 for operating conditions typically found in the European 

implementation of G.shdsl. This is the default mode for the MM701G modem.

—

 for automatically negotiating the Annex A or B standard by which this 

modem, and the device to which this modem is attached, can operate. This is the 
default mode for the MM702G modem.

—

 for operating conditions that include the Annex B standard with 

Access Network Frequency Plan Pulse Spectral Density (PSD) mask.

—

 for automatically negotiating the Annex A or B standard with 

Access Network Frequency Plan Pulse Spectral Density (PSD) mask.

Startup Margin

Type 

 then select a number from 

 to 

 for possible values between 

 through 

, or select 

to completely 

 the margin.The target signal-to-noise margin, 

in decibels, that the modem must achieve with a BER of 10

-7

 or better to successfully 

complete synchronization. The default margin value is 6 dB. A lower margin may 
result in a higher data rate, but it can increase noise on the line. 

Bit Rate Mode

Type 

 then select either 

for 

or 

for 

 mode. Bit rate mode indicates how 

the modem synchronizes with the device to which it is attached. The default for the 
MM702G modem is 

 mode. The default for the MM701G modem is 

 

mode. The following provides more description for each mode.

 mode indicates that the modem will synchronize with the other end (a 

DSLAM or another modem) at a fixed bit rate through negotiation. The modem 
will synchronize at the best rate, up to the data rate specified (page 122), that can 
be achieved by both ends.

 mode indicates that prior to modem negotiating a rate, the modem 

performs an adaptation phase during which it determines a best possible rate based 
on conditions of the line. After adaptive mode, the modem will then negotiate the 
best rate that can be achieved with the other end, based on the adaptation results.

Type 

to

 for the G.shdsl settings.