Configured Versus Actual Shdsl Rates; N-Wire Mode - ZyXEL Communications MSC1024G Series User Manual

Table 151 Profile > VDSL2 > ChanProfile
LABEL
Apply
New
Cancel
Index
Name
Down / Up Data
Rate (kbps)
Delay
INP
Modify
Delete

13.8 Configured Versus Actual SHDSL Rates

You configure the maximum and minimum rates of individual SHDSL ports using the set
profile command. However, due to noise and other factors on the line, the actual rate may not
reach the maximum that you specify.
Even though you can specify arbitrary numbers in the set profile command, the actual rate is
always a multiple of 64 Kbps. If you enter a rate that is not a multiple of 64 Kbps, the actual
value will be the next lower multiple of 64Kbps. For instance, if you specify 2100 Kbps for a
port, the actual value will be 2048 Kbps, and if you specify 2120 Kbps, the actual value will be
2112 Kbps.
Note that when you configure a SHDSL profile, the upstream and downstream speeds are the
same. The minimum rate must be less than or equal to the maximum rate.

13.9 N-wire Mode

The n-wire mode allows you to physically bundle two SHDSL ports into a single 4-wire
connection. The 4-wire mode is described in ITU-T G.991.2. You can use it to connect to
SHDSL modems or routers that also support 4-wire mode. N-wire mode also allows you to
physically bundle four SHDSL ports into a single 8-wire connection. The 8-wire group is
called mpair4.
N-wire mode can increase the reach of a particular data rate without having to regenerate the
signal. It can also give increased bandwidth for LAN-to-LAN applications.
You can n-wire bundle multiple groups of ports on a single SHDSL line card.
MSC1000G/1024G/1224G Series User's Guide
DESCRIPTION
Click Apply to save the changes in this screen to the system's volatile memory.
The system loses these changes if it is turned off or loses power, so use the
Config Save on the navigation panel and then the Save button to save your
changes to the non-volatile memory when you are done configuring.
The new or modified entry then displays in the summary table below.
While you are modifying a profile, you can click New to start configuring a fresh
profile without saving your changes.
Click Cancel to start configuring the screen again.
This is the number of a VDSL2 channel profile.
This field displays the descriptive name of a profile.
This field displays the configured maximum upstream and downstream data
transmission rates in megabits per second in a profile.
This field displays the configured maximum upstream and downstream interleave
delays in a profile.
This field displays the configured minimum upstream and downstream impulse
noise protection levels in a profile.
Select a profile's Select radio button and click Modify to edit the profile.
Select a profile's Select radio button and click Delete to remove the profile.
Chapter 13 Profile Screens
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