Chapter 22 Diagnostic
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 |
| 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. |
| 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. |
| outF4Pkts is the number of ATM OAM F4 cells that have been sent. |
| inF5Pkts is the number of ATM OAM F5 cells that have been received. |
| outF5Pkts is the number of ATM OAM F5 cells that have been sent. |
| openChan is the number of times that the ZyXEL Device has opened a |
| logical DSL channel. |
| closeChan is the number of times that the ZyXEL Device has closed a |
| logical DSL channel. |
| txRate is the number of bytes transmitted per second. |
| rxRate is the number of bytes received per second. |
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ATM Loopback | Click this to start the ATM loopback test. Make sure you have configured |
Test | at least one PVC with proper VPIs/VCIs before you begin this test. The |
| ZyXEL Device sends an OAM F5 packet to the DSLAM/ATM switch and |
| then returns it (loops it back) to the ZyXEL Device. The ATM loopback |
| test is useful for troubleshooting problems with the DSLAM and ATM |
| network. |
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