Functional Operation - NEC PASOLINK Training Course

3. FUNCTIONAL OPERATION

This section describes functional operation of the transmit line
equalization, transmit digital processing, modulation, demodulation,
receive digital processing, receive line equalization, analog service
channel signal transmission, 9.6k digital service channel transmission,
alarm signal transmission, wayside signal transmission, 64k digital service
channel transmission, LAN signal transmission, and alarm and control in
that order for the IDU.
The IDU provides four signal transmission systems; 2 x 2 MB, 4 x 2 MB,
8 x 2 MB and 16 x 2 MB in 1+0 and 1+1 configuration as shown in Fig 2-
1 and Fig 2-2 Functional Block Diagram.