Zyxel VES-1624FT-55A [112/312] Virtual channels

Zyxel VES-1624FT-55A [112/312] Virtual channels
Chapter 16 xDSL Port Setup
VES-1624FT-55A User’s Guide
112
The following table describes the labels in this screen.
16.10 Virtual Channels
Defining virtual channels (also called Permanent Virtual Circuits or PVCs) allows you to set
priorities for different services or subscribers. You can define up to eight channels on each
DSL port and use them for different services or levels of service. You set the PVID that is
assigned to untagged frames received on each channel. You also set an IEEE 802.1p priority
for each of the PVIDs. In this way you can assign different priorities to different channels (and
consequently the services that get carried on them or the subscribers that use them).
For example, you want to give high priority to voice service on one of the DSL ports.
Use the Edit Static VLAN screen to configure a static VLAN on the IP DSLAM for voice on
the port.
Use the DSL Edit Port Channel Setup screen to:
Configure a channel on the port for voice service.
Set the channel to use the PVID of the static VLAN you configured.
Assign the channel a high priority.
16.10.1 Super Channel
The IP DSLAM forwards frames belonging to VLAN groups that are not assigned to specific
channels to the super channel. Enable the super channel option to allow a channel forward
frames belonging to multiple VLAN groups (that are not assigned to other channels). The
super channel functions in the same way as the channel in a single channel environment. One
port can have only one super channel.
Table 21 DPBO EPSD: Custom
LABEL DESCRIPTION
Port X This field displays the port you are currently configuring.
01~16
17~32
Click the 01~16 tab to configure PSD levels for break points 1 to 16 and click the
17~32 tab to configure PSD levels for break points 17 to 32.
Break Point This index number identifies each incremental break point. There are 32 break
points in total you can configure.
Tone Index A tone is a sub-channel of VDSL band. DMT divides VDSL bands into many
4.3125 kHz tones.
Enter an increased number (than previous row) from 0 to 4096 in this field that is
also the horizontal of the DPBOEPSD graph.
Frequency This read-only field displays a frequency that equals the tone index multiple 4.3125
kHz. This field automatically calculates after a Tone Index value is entered.
PSD level Enter the PSD level for the corresponding frequency break point.
Apply Click Apply to save your changes back to the switch.
Cancel Click Cancel to reload the previous configuration for this screen.

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