ADC MM702G Manuel D’Utilisation

 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

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. Possible values are 

 through 

, or to completely 

 the 

margin.

Bit Rate Mode

Bit rate mode indicates how the modem synchronizes with the device to which it is 
attached in either a 

 or 

 mode. The default for the MM702G modem is 

 mode. The default for the MM701G modem is 

 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 (

), 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.

Click 

.