56

ICX-250 Diagnostics

Testing

T1 Interface - T1 Test Pattern QRSS (Slide switch - front)

ICX-250 - Front Panel

 

 

 

Self Check

T1Test

 

T1Status

 

 

 

 

T1 Loop

 

 

 

 

 

 

Test Pattern

 

 

Test Pattern

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ICX-250

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Off / QRSS

 

1 / Off / 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T1 Loop

Data Loop 1

 

Data Loop 2

 

 

 

 

 

 

Net. / Off / Lcl.

Lcl. / Off / Net.

Lcl. / Off / Net.

FXS Status Channel

1 3 5 7 9 11 13 15 17 19 21 23

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

4

 

6

 

8

10 12

14 16 18 20 22 24

 

T1 Test

 

 

 

 

T1 Test

 

 

 

 

 

Off QRSS

 

 

 

Off QRSS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

11280-A

QRSS

Off

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.

ADCP-62-023

Issue 1, September 1998

 

© 1998, ADC Telecommunications, Inc.