Chapter 26 Diagnostic
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The following table describes the fields in this screen.
Table 93
Maintenance > Diagnostic > DSL Line
LABEL
DESCRIPTION
ATM Status
Click this 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.
inF4Pkts
is the number of ATM Operations, Administration, and Management (OAM) F4
cells that have been received. See ITU recommendation I.610 for more on OAM for ATM.
inF5Pkts
is the number of ATM OAM F5 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.
outF4Pkts
is the number of ATM OAM F4 cells that have been sent.
outF5Pkts
is the number of ATM OAM F5 cells that have been sent.
outDiscards
is the number of ATM cells sent that were rejected.
ATM Loopback
Test
Click this 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.