Prestige 861 VDSL Modem
VDSL Commands
5-5
5.8 Multiplexing
There are two conventions to identify what protocols the virtual circuit (VC) is carrying. Be sure to use the
multiplexing method required by your ISP.
5.8.1 VC-based Multiplexing
In this case, by prior mutual agreement, each protocol is assigned to a specific virtual circuit; for example,
VC1 carries IP, etc. VC-based multiplexing may be dominant in environments where dynamic creation of
large numbers of ATM VCs is fast and economical.
5.8.2 LLC-based Multiplexing
In this case one VC carries multiple protocols with protocol identifying information being contained in each
packet header. Despite the extra bandwidth and processing overhead, this method may be advantageous if it
is not practical to have a separate VC for each carried protocol, for example, if charging heavily depends on
the number of simultaneous VCs.
5.9 VDSL
Sub-Commands
The system uses a multi-level command structure for vdsl command. You must type the main command first
and then the sub-commands, as follows:
P861-G1:/> vdsl
vdsl> port snr
The rest of this chapter shows commonly used VDSL sub-command examples.
5.9.1 VDSL Port Command
Syntax:
port [snr/speed/counter]
This command displays the information on your VDSL port SNR(Signal-to-Noise-Ratio), speed and counter.
The examples are shown next.
