ZyXEL Communications VES-1000 - Manual (Page 114)

VES-1000 Series Ethernet Switch
12-6 VDSL-Related Commands
Table 12-E VDSL Channel Status Counters
FIELD DESCRIPTION
SNR The higher the SNR (Signal-to-Noise Ratio) number, the better. SNR (Signal-to-Noise
Ratio is the ratio of the amplitude of the desired signal to the amplitude of noise
signals at a given point in time).
MSE This is the Minimum Square Error. The minimum mean-square error (also known as
MMSE) performance measure is a popular metric for optimal signal processing.
RS_ERR This is the count of bit errors detected and corrected by Reed-Solomon code. Reed-
Solomon codes are block-based error correcting codes and are used to correct errors
in many systems.
Power Parameters:
MIN_PSD This is the mimimum Power Spectrum Density (power divided by bandwidth).
MAX_PSD This is the maximum Power Spectrum Density (power divided by bandwidth).
TXPWR This field displays transmission power information in hexadecimal format.
POCO Port Output Control registers provide the control bit information.
PSD This is the Power Spectrum Density (power divided by bandwidth).
12.2.7 VDSL Patch Command
vdsl patch [lt|nt]
This command makes the VES-1000 Series switch load new VDSL modem code into the VES-1000 Series switch
(LT) or VDSL subscriber modem (NT). If “LT” is specified, the VES-1000 Series switch will load the VDSL
modem code into the VES-1000 Series switch. If “NT” is specified, the VES-1000 Series switch will load the
VDSL modem code into the VDSL subscriber modem (P841). The VDSL connection should automatically
reconnect after the new VDSL modem code has been successfully loaded.
12.2.8 VDSL Version Command
vdsl ver
Use this command to see the VDSL driver version, date it was created and VDSL patch version.
Figure 12-4 VDSL Driver Version
12.2.9 Clear VDSL Channel Status
vdsl clear chan-id
ves-100> vdsl ver
vdsl driver version = 0.54
vdsl driver date = 12/04/2001
vdsl patch version = 0x50
ves-100>