Chapter 30 Diagnostic
Figure 248 Diagnostic: DSL Line
The following table describes the fields in this screen.
Table 182 Diagnostic: DSL Line
LABEL | DESCRIPTION |
ATM Status | Click this button to view your DSL connection’s Asynchronous Transfer Mode (ATM) |
| statistics. ATM is a networking technology that provides |
| ATM uses |
| (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 button to start the ATM loopback test. Make sure you have configured at |
Test | 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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