P841C Central-Side VDSL Modem

This command makes the P841C loads new VDSL modem code into the P841C (LT) or P841 (NT). If “LT” is specified, the P841C will load the VDSL modem code into the P841C. If “NT” is specified, the P841C will load the VDSL modem code into the P841. The VDSL connection should automatically reconnect after the new VDSL modem code has been successfully loaded.

4.1.6VDSL Reset Command

vdsl reset

This command causes a software reset to the VDSL Chip (local or remote). The VDSL link first disconnects before the channel resets.

4.1.7VDSL Reconnect Command

vdsl reconnect

This command forcibly causes the P841C to reconnect the VDSL link.

4.1.8VDSL Status Command

vdsl status

This command shows the VDSL status register values as shown in the next example. Information in these fields is mainly for debugging purposes.

SNR, MSE and RS_ERR are polled every three seconds. Total RS_ERR are counted during the connection. SNR, MSE, RS_ERR and Total_RSERR are cleared after the VDSL is link up.

P841C>vdsl

status

 

 

 

 

 

 

 

 

VDSL

Parameters:

 

 

 

 

 

 

 

 

 

LINK_STAT = 0x00

 

DISC = 0

Modem Code = (0x50,N/A)

VDSL

Line Quality

Status:

 

 

 

 

 

 

US

= QAM 4/Int

32, Rate =

1562500 bps, fc = 4467773 Hz

DS

= QAM 16/Int 24, Rate =

4166666 bps, fc = 1831054 Hz

US

SNR =

0.00

0.00 0.00

0.00

0.00

0.00

0.00

0.00

dB

US

MSE =

0.00

0.00 0.00

0.00

0.00

0.00

0.00

0.00

dB

DS

SNR =

0.00

0.00 0.00

0.00

0.00

0.00

0.00

0.00

dB

DS

MSE =

0.00

0.00 0.00

0.00

0.00

0.00

0.00

0.00

dB

Average US SNR = 0.00dB

US MSE =

0.00dB US Noise Margin = -9.00dB

Average DS SNR = 0.00dB

DS MSE =

0.00dB DS Noise Margin = -9.00dB

US

RS_ERR = 0

0

0 0

0 0

0 0

 

 

 

 

 

US

Total

RS_ERR

= 0

 

 

 

 

 

 

 

DS

RS_ERR = 0

0

0 0

0 0

0 0

 

 

 

 

 

DS

Total

RS_ERR

= 0

 

 

 

 

 

 

 

LT Power Parameters:

TXPWR = 0x32d, POCO = 0x0, POWER = 5.70 dBm, PSD = -55.27 dBm/Hz

Figure 4-5 VDSL Status Example

4-4

VDSL-Related Commands

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ZyXEL Communications P841C manual Vdsl Reset Command, Vdsl Reconnect Command, Vdsl Status Command

P841C specifications

ZyXEL Communications P841C is an advanced networking device designed with the aim of delivering high-performance and reliable internet connectivity. Positioned primarily for home and small office environments, the P841C stands out with its impressive range of features that cater to diverse networking needs.

The P841C is a DSL modem/router, equipped to handle the demands of modern internet usage, including streaming, gaming, and multiple simultaneous connections. One of its main features is its support for VDSL2 and ADSL2/2+, which ensures high-speed internet access over both fiber and copper lines. This flexibility allows users to take full advantage of their internet service provider's offerings without needing additional equipment.

Another significant characteristic of the ZyXEL P841C is its integrated dual-band wireless capabilities. It operates on both 2.4 GHz and 5 GHz frequency bands, enabling users to connect a wider array of devices without compromising on speed or performance. The dual-band functionality helps reduce network congestion and interference, supporting smoother online activities. This feature is particularly beneficial in environments with numerous connected devices, such as smart TVs, gaming consoles, and smartphones.

The P841C is also equipped with advanced security features, including WPA3 encryption, which ensures that the home network remains secure from unauthorized access. Additionally, it supports the latest IPv6 protocol, ensuring that the device is future-proof and ready for the next generation of internet addressing.

The modem/router also includes built-in Quality of Service (QoS) settings, which allow users to prioritize bandwidth for specific applications or devices. This ensures that critical activities, such as video conferencing or online gaming, receive the necessary bandwidth for optimal performance.

With its sleek, compact design, the ZyXEL P841C fits seamlessly into any home or office setting. Easy installation and user-friendly interface contribute to its appeal, making setup straightforward even for those who may not be tech-savvy. The device comes with multiple Ethernet ports, allowing for wired connections to computers, printers, and other devices.

Overall, the ZyXEL Communications P841C is a robust solution for anyone seeking a reliable and high-speed internet experience. Its blend of advanced technologies, security features, and user-friendly design makes it an ideal choice for both residential and small business applications. Whether for casual browsing or demanding online activities, the P841C is equipped to handle it all with ease.