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External DIP Switches
Data Port 1 and 2 Data Rate -
ICX-250 - Rear Panel
Switch numbers S1 through S5 are shown on the board within the unit.
FXS Loopback
FXS Loop Pairs
1
S5
1
ON
0
1
2 3 4 5 6 7 8 9 10 11 12
Description: S2 and S3 position 12 selects the data rate for Data Ports 2 and 1, respectively.
Factory Setting: 56Kbps
64 Kbps: Data Ports1 or 2 receive and transmit data at a multiple of 64 Kbps.
56 Kbps: Data Ports 1 or 2 receive and transmit data at a multiple of 56 Kbps.
The options shown on this page do not have to be matched. i.e. Port 1 can have a different interface
and speed than Port 2.
FXS Ports (per line) - Loopback Operation and/or Channel Unassigned
ICX-250 - Rear Panel
Switch numbers S1 through S5 are shown on the board within the unit.
FXS Loop Pairs
1
S5
FXS Loopback
1
ON
DIP
0
1
2 3 4 5 6 7 8 9 10 11 12
Description: Used to set loopback for each FXS channel.
Factory Setting: OFF
ON: Breaks the connections to and from the FXS Ports and loops the receive data back onto the
transmit path towards the T1. In the case of unassigned channels, provides an idle termination.
Issue 1, September 1998
© 1998, ADC Telecommunications, Inc.
( DIP switch - back )
12 13
24
Data 1
Alm.
S4
S3
Data 1
DIP
64 Kbps
FXS Loopback
12 13
24
Data 1
Alm.
S4
S3
FXS Loopback
1
ON
0
1
2 3 4 5 6 7 8 9 10 11 12
Configuring the ICX-250
Data 1
T1 Line
Data 2
Data 2
T1
S2
S1
Data 2
1
ON
0
1
2 3 4 5 6 7 8 9 10 11 12
56 Kbps
Data 1
T1 Line
Data 2
Data 2
T1
S2
S1
DIP
39
T1
24/48 VDC
Rx
+ – G
Tx
120 VAC–.6A 60Hz
11274-A
DIP
( DIP switch - back )
T1
24/48 VDC
Rx
+ – G
Tx
120 VAC–.6A 60Hz
11275-A
ADCP-62-023
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