Fig. 3
The “RATE” dial and the “SET” DIP switches (fig.3) specify operation mode
of the DSL channel. The dial sets DSL channel data rate (fig.4).
Fig. 4
The “SET1” DIP switch selects “Master/Slave” mode, the “SET2” switch
defines a method of the DSL channel rate negotiation and the “SET4”
switch sets a mode of modem management. Purpose of the switches are
shown on Table 6.
Table 5
Switch
Purpose
Position
Meaning
SET1
Operation mode
ON
Master modem (STU-
C)
OFF
Slave modem (STU-R)
SET2
Local or Preactivation
rate select
ON
Rate is exchanged by
Preactivation
17
