ADC ICX-250 - Manual (Page 59)

56 ICX-250 Diagnostics Testing
ADCP-62-023 Issue 1, September 1998
© 1998, ADC Telecommunications, Inc.
T1 Interface - T1 Test Pattern QRSS (Slide switch - front)
ICX-250 - Front Panel
Description: This is a two position slide switch used for T1 Interface testing.
Factory Setting: OFF
On: All connections between either the Data Ports or the FXS Ports and the T1 interface are
broken and a QRSS pattern is transmitted onto the T1 interface. At this time the T1 Test pattern
LED will light when QRSS is being transmitted. (see section on LED).
Note: The T1 test pattern for QRSS only works
with framed T1.
Note: The T1 test LED will come on when the
QRSS switch is turned ON. When operating the
QRSS switch the T1 Loopback switch will be
inoperative.
ICX-250
1 3 5 7 9 11 13 15 17 19 21 23
2 4 6 8 10 12 14 16 18 20 22 24
FXS Status Channel
Data Loop 2
Lcl. / Off / Net.
Data Loop 1
Lcl. / Off / Net.
T1 Loop
Net. / Off / Lcl.
T1 Test
Off QRSS
QRSS
1 / Off / 2 Off / QRSS
T1 Status T1 Loop Test Pattern Test Pattern T1 T
est
Self Check
11280-A
T1 Test
Off QRSS
Off