The Dsl Line Screen - ZyXEL Communications P-2812HNU-51c User Manual

Chapter 26 Diagnostic

26.3 The DSL Line Screen

Click Maintenance > Diagnostic > DSL Line to open the screen shown next.
Figure 135 Maintenance > Diagnostic > DSL Line
The following table describes the fields in this screen.
Table 88 Maintenance > Diagnostic > DSL Line
ITEM
ATM Status
ATM
Loopback
Test
270
DESCRIPTION
This is available only when your WAN mode is ADSL.
Click this button to view your DSL connection's Asynchronous Transfer Mode (ATM)
statistics. ATM is a networking technology that provides high-speed data transfer. ATM
uses fixed-size packets of information called cells. With ATM, a high QoS (Quality of
Service) can be guaranteed.
The (Segmentation and Reassembly) SAR driver translates packets into ATM cells. It
also receives ATM cells and reassembles them into packets.
These counters are set back to zero whenever the device starts up.
• inPkts is the number of good ATM cells that have been received.
• inDiscards is the number of received ATM cells that were rejected.
• outPkts is the number of ATM cells that have been sent.
• outDiscards is the number of ATM cells sent that were rejected.
This is available only when your WAN mode is ADSL.
Click this button to start the ATM loopback test. Make sure you have configured at
least one PVC with proper VPIs/VCIs before you begin this test. The Device sends an
OAM F5 packet to the DSLAM/ATM switch and then returns it (loops it back) to the
Device. The ATM loopback test is useful for troubleshooting problems with the DSLAM
and ATM network.
P-2812HNU(L)-Fx Series User's Guide