D-Link DAS-3224_revB User Manual

The ATM OAM test generates the ATM F5 loop-back to diagnose the ADSL port interface. 
 
Operation Administration and Maintenance (OA&M) - OA&M is defined for supervision, testing, and 
performance monitoring. It uses loop-back for maintenance and ITU TS standard CMIP, with 
organization into 5 hierarchical levels: Virtual Channel (F5 - Between VC endpoints), Virtual Path 
(F4- between VP endpoints), Transmission Path (F3- Between elements that perform assembling, 
disassembling of payload, header, or control), Digital Section (F2 Between section end-points, 
performs frame synchronization) and Regenerator Section (F1- Between regeneration sections).   
 
Figure 4-60 shows the ATM OAM Test Dialog.   
 

 

 
Table 4-31 describes the OAM test field items. 
 

Loop-back source id assigned to the ATM port. The ATM port will respond to 
all loop-back cells, which carry this OAM id. This parameter specifies the 
interface, virtual path, and virtual circuit for which information is desired.   

Port(vpi/vci) 

Use this command to display result of previous OAM loopback command. This 
specifies the result of the loop back test. It may be Result Unavailable, Seg 
Succeeded, Seg Failed, E2e Succeeded, E2e Failed, Test Aborted, or Test In 
Progress. 

Result 

 
 

DELT is primarily used for reactive tests on a loop after a CPE has been deployed, either to help 
troubleshoot a line or to capture a baseline of loop characteristics at the time of installation.