RoadRunner
U S E R S G U I D E
32
linking the encoder output to the decoder input. When in loopback
mode, any audio fed into the
RoadRunner
will appear at the return
audio outputs. System loopback can be used when the
RoadRunner
is
either on-line or off-line. When on-line and in loopback, you will hear
local audio, not audio from the far end codec.
Use the keypad sequence
<Sys LB><Loopback>
to set the loopback mode, or the
CSL
command to set the loopback
mode from a terminal or computer. The loopback bit rate selection is
automatic and determined by the current encoder bit rate.
FOR NORMAL OPERATION THE LOOPBACK MODE MUST BE SET
TO NONE.
To return the
RoadRunner
to normal operation, use the keypad sequence
<Sys LB><None>
!
note:
When in single line
mode, the loopback
bit rate defaults to
64 kb/s and cannot
be changed. When
in the two line
mode, the loopback
bit rate defaults to
128 kb/s and cannot
be changed.