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Cisco MGX 8230 Edge Concentrator Installation and Configuration
Release 1.1.31, Part Number 78-11215-03 Rev. B0, May 2001
Chapter6 Card and Service Configuration
DS3 Loopback Test
Configure Transmit FEAC Code

Configure DS3 for Sending Looped or Normal Data

To verify that DS3 can be configured to send looped or normal data:
Step 1 Select a node with PXM-T3 back c ar d.
Step 2 Configure the line using cnfln -felpbnum 30.
Step 3 Configure the transmit FEAC code to be dsx3SendNoCode by using CLI command, cnfln -ds3
<slot>.<port> -tfeac 1.
Step 4 On the node, verify that the defau lt FE AC cod e s hows u p as LineXmtFEACCode : Se ndNoCode using
dspln -ds3 <slot>.<port>.
Step 5 Check that dsplog does not show any errors or alarms l og g e d .
Step 6 On the tester (for example, HP cerjac tester) , check that the code for dsx3SendNoCode has been received.
Pass Criteria:
•The dspln should show LineXmtFEACCode as SendNoCode.
•The code that has been transmi tt ed is r e ceived on t he te s ter a nd ve rified .
•No errors logged on the console or the log.

Configure DS3 to Send Line Loopback

To verify that DS3 can be configured to send line loopback:
Step 1 Select a node with PXM-T3 back c ar d.
Step 2 Configure the line using cnfln -felpbnum 30.
Step 3 Configure the transmit FEAC code to be dsx3SendLineCode by using CLI command, cnfln -ds3
<slot>.<port> -tfeac 2.
Step 4 On the node, verify that the default FEAC code shows up as LineXmtFEACCode : SendLineCode usi ng
dspln -ds3 <slot>.<port>.
Step 5 Check that dsplog does not show any errors or alarms l og g e d .
Receive FEAC Validation
Transmit FEAC Codes
MGX 8230 Switch
with T3 Interface
DTA Tester
(Digital
Transmission
Analyzer)
46087
Receive FEAC Validation
Transmit FEAC Codes
MGX 8230 Switch
with T3 Interface
DTA Tester
(Digital
Transmission
Analyzer)
46087