ZyXEL Communications P-660 User Manual

P-660 Series Support Notes

6. Does the VC-based multiplexing perform better than the LLC-based
multiplexing?

Though the LLC-based multiplexing can carry multiple protocols over a single VC, it
requires extra header information to identify the protocol being carried on the virtual
circuit (VC). The VC-based multiplexing needs a separate VC for carrying each
protocol but it does not need the extra headers. Therefore, the VC-based multiplexing
is more efficient.

7. How do I know the details of my ADSL line statistics?

You can use the following CI commands to check the ADSL line statistics.

CI> wan adsl perfdata
CI> wan adsl status
CI> sys log disp
CI> wan adsl linedata far
CI> wan adsl linedata near

8.What are the possible reasons when the ADSL link is down?

The physical ADSL line may not be up if:

(1) The DSLAM is not Alcatel.
(2) If it is Alcatel, the firmware version should be above 3.1.

9.What are the signaling pins of the ADSL connector?

The signaling pins on the P-660's ADSL connector are pin 3 and pin 4. The middle
two pins for a RJ11 cable.