P-793H v 2 Support Notes
two-way cable modem transmissions, and while the figure also grows steadily, it
will not catch up with telephone lines for many years. Additionally, many of the
older cable networks are not capable of offering a return channel; consequently,
such networks will need significant upgrading before they can offer high
bandwidth services.
2. How do I know the DSL line is up?
You can see the DSL LEDs on the P-793H v2's front panel are on Green
when the DSL physical layer is up.
Note:
There are two DSL LEDs: DSL1 and DSL2.
When we use one line for Internet access or back to back application, DSL1
and DSL2 will act the same as one LED.
When we use 1-2 back to back application by Y cable, they will show the
respective DSL line status.
3. How does the P-793H v2 work on a noisy DSL?
Depending on the line quality, the P-793H v2 uses "Fall Back" and "Fall
Forward" to automatically adjust the date rate.
4. 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.
5. How do I know the details of my DSL line statistics?
In WEB Configurator
, Maintenance -> Diagnostic -> DSL Line -> DSL Line
Status:
18
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