Re: ma5300 ADSL template parameters

Re: ma5300 ADSL template parameters

Posted:

Parameter Name

Parameter description

All

Configure the ADSL transmission mode to ADSL, adsl2, and adsl2 + full compatibility mode. Supports transmission modes such as G992.1-G992.5 and t1.413.

Full Rate

Set the ADSL transmission mode to full speed. Supports transmission modes such as g992.1, g992.3, g992.5, and t1.413.

G. Hs

Set the ADSL transmission mode to G. HS. Supports transmission modes such as G992.1-G992.5 with g992.5 preferred.

G992.1

Configure the ADSL transmission mode to g992.1.

G992.2

Configure the ADSL transmission mode to g992.2.

G992.3

Configure the ADSL transmission mode to g992.3.

G992.4

Set the ADSL transmission mode to g992.4.

G992.5

Set the ADSL transmission mode to g992.5.

Trellis Coding

Raster encoding. The grid encoding algorithm improves the signal-to-noise ratio and enhances the stability of ADSL connections. Generally, this function is enabled.

Upstream Channel bit swap

Uplink Channel bit switching status. When the channel characteristics of ADSL change, the signal-to-noise ratio of a sub-carrier deteriorates and the number of digits transmitted by the sub-carrier is not supported, the bitwise switching function can be used to exchange the bitwise transmitted by the sub-carrier to other sub-carriers, thus reducing the disconnection caused by changing the channel characteristics of twisted pair wires. The local ADSL board and the user's modem must support this function at the same time to take effect. We recommend that you disable this function in the ADSL template. We recommend that you enable this function in the adsl2 + template.

Downstream Channel bit swap

Downstream Channel bit switching status. When the channel characteristics of ADSL change, the signal-to-noise ratio of a sub-carrier deteriorates and the number of digits transmitted by the sub-carrier is not supported, the bitwise switching function can be used to exchange the bitwise transmitted by the sub-carrier to other sub-carriers, thus reducing the disconnection caused by changing the channel characteristics of twisted pair wires. The local ADSL board and the user's modem must support this function at the same time to take effect. We recommend that you disable this function in the ADSL template. We recommend that you enable this function in the adsl2 + template.

Channel Mode

Channel working mode. There are two channels: interleaved and fast. Using a fast way of working, the latency of data transmission in ADSL is relatively small, but the stability is somewhat poor; using the intertwined method, the connection stability of ADSL is better, however, the transmission latency of ADSL data is relatively large. In general, we recommend that you use an interlace mode for common online services. For latency-sensitive VOD and other services, we recommend that you use a fast method.

Noise margin for Modem

Modem noise tolerance. Noise tolerance refers to the additional noise that the system can tolerate while maintaining the current rate and error rate. The higher the noise tolerance, the higher the line stability, but the higher the noise tolerance, the lower the activated physical connection rate.

Minimum noise margin in downstream

Minimum downstream noise margin. During the establishment of an ADSL connection, if the calculated noise margin is less than the set minimum noise margin, the port cannot be activated. Recommended Value: 0 dB.

Maximal noise margin in downstream

Maximum downstream noise margin. During the establishment of the ADSL connection, if the calculated noise margin is greater than the set maximum noise margin, the system will limit the maximum downstream noise margin to the set maximum noise margin. Recommended Value: 31db.

Target noise margin in downstream

Downstream target noise margin. The target noise margin is a certain amount of noise margin reserved for normal data communication. It aims to ensure normal communication even when the noise on the line deteriorates. This is a reserved measure. The larger the noise tolerance, the lower the probability of a data transmission error, the safer the system, but the lower the maximum rate. In practical application, select the noise tolerance based on the line quality. Recommended Value: 12db.

Minimum noise margin in upstream

Minimum uplink noise margin. During the establishment of an ADSL connection, if the calculated noise margin is less than the set minimum noise margin, the port cannot be activated. Recommended Value: 0 dB.

Maximal noise margin in upstream

Maximum uplink noise margin. During the establishment of the ADSL connection, if the calculated noise margin is greater than the set maximum noise margin, the system will limit the maximum uplink noise margin to the set maximum noise margin. Recommended Value: 31db.

Target noise margin in upstream

Uplink target noise margin. The target noise margin is a certain amount of noise margin reserved for normal data communication. It aims to ensure normal communication even when the noise on the line deteriorates. This is a reserved measure. The larger the noise tolerance, the lower the probability of a data transmission error, the safer the system, but the lower the maximum rate. In practical application, select the noise tolerance based on the line quality. Recommended Value: 12db.

Adapt mode in downstream

The downlink transmission rate is adaptive.

When the line SNR changes, there are three adaptive methods for rate:

• 1-fixed (fixed, rate unchanged)
• 2-adaptatstartup (Adaptive upon startup, activation at the worst rate)
• 3-adaptatruntime (Adaptive during runtime, dynamically adjusted during runtime)

Adapt mode in upstream

The uplink transmission rate is adaptive.

When the line SNR changes, there are three adaptive methods for rate:

• 1-fixed (fixed, rate unchanged)
• 2-adaptatstartup (Adaptive upon startup, activation at the worst rate)
• 3-adaptatruntime (Adaptive during runtime, dynamically adjusted during runtime)