ADC ICX-250 - Manual (Page 45)

40 Configuring the ICX-250 External DIP Switches
ADCP-62-023 Issue 1, September 1998
© 1998, ADC Telecommunications, Inc.
Note : It is recommended that all unassigned channels
be provided an idle termination.
T1 Network
ICX-250
Transmit Receive
FXS 1
FXS 1 Loopback
T24 Network
ICX-250
Transmit Receive
FXS 24
FXS 24 Loopback
11276-A
The selected DS0 is looped after leaving the framer before reaching the FXS Interface.
The CPU is used to control this loopback via the Time Slot Assigner (TSA, a part of the
CPU). Subsystems T1 Line Interface Unit, T1 Framer, and CPU are exercised.