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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
Chapter 6 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 card.
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 default FEAC code shows up as LineXmtFEACCode : SendNoCode using
dspln -ds3 <slot>.<port>.
Step 5 Check that dsplog does not show any errors or alarms logged.
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 transmitted is received on the tester and verified.
• 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 card.
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 using
dspln -ds3 <slot>.<port>.
Step 5 Check that dsplog does not show any errors or alarms logged.
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