ZyXEL Communications MSC1000G Series, Руководство пользователя

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Chapter 9 Subscriber Port Setup Screens
Management Switch Card User’s Guide
231
Result Mask Click Show to display the upstream and downstream result mask. Use this screen to check
PSD mask settings.
Figure 142
Result Mask
Click Close Window to close this window.
ADSL spectrum
compatibility The VDSL2 frequency band overlaps with the ADSL2 and ADSL2+ frequency bands. When
VDSL2 lines and ADSL2 or ADSL2+ lines are in the same bundle of telephone lines, their
signals may interfere with each other.
Select none to have the VDSL2 services use their normal frequency band plan. You can use
this if there are no ADSL2 or ADSL2+ lines near the VDSL2 line.
If ADSL2 lines are bundled with the VDSL2 line, select adsl2 to avoid possible interference.
If ADSL2+ lines are bundled with the VDSL2 line, select adsl2+ to avoid possible
interference.
Power Mode The power mode controls the connection’s power adaptivity.
Select fix to set the maximum downstream transmission power to the number you specify
in the Max DS TxPower field.
Select power to give the saving of transmission power priority over the transmission rate.
The line card attempts to reduce its transmission power as much as possible while still
maintaining the configured minimum rate.
Select rate to give the transmission rate priority over the saving of transmission power. The
line card attempts to achieve the maximum configured transmission rate before reducing
the transmission power.
Max US
TxPower Set the maximum upstream transmission power, -130~200 in 0.1 dBm.
Max DS
TxPower Set the maximum downstream transmission power, -50~200 in 0.1 dBm.
Max RxPower Set the maximum aggregate received power at the line card’s port, -255~255 in 0.1 dBm.
Virtual Noise This field displays whether virtual noise is enabled or disabled in the downstream and
upstream transmissions. Virtual noise is the noise allowed on the line before the first line
speed adjustment occurs. Click
Modify to configure virtual noise settings. See Section
11.7.6 on page 350 .
ADSL TPS-TC
Type Select whether to use ATM or PTM encapsulation in the Transport Protocol Specific
Transmission Convergence (TPS-TC) sub-layer for ADSL connections. The CPE must also
support the same setting you use. So you can use PTM if the CPE supports it, otherwise you
must use ATM.
Table 100
VDSL Port Setup: Advanced
LABEL DESCRIPTION