Specifications

Chapter 4 Managing ASMi-52 via a Terminal ASMi-52 Installation and Operation Manual
4-28 Configuring the Physical Ports
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To configure the power spectral density:
1. From the SHDSL Port Configuration menu, select Asym PSD to choose the
power spectral density value: symmetrical or asymmetrical.
The display is refreshed and a new value appears.
2. Select Save to save the changes.
Remote ASMi-52 units automatically detect the line power density. This parameter is
permanently set to Sym/Asym Enable and cannot be changed.
Configuring the Line Probing
By configuring this parameter, you force ASMi-52 to perform line probing in order
to find the best possible rate of transmission – adaptive rate. Or you command the
modem to skip the rate adaptation phase – fixed rate.
Only central ASMi-52 units with the 2-wire line interface support fixed and adaptive
rates, remote units operate with adaptive rate only.
ASMi-52 units with the 4-wire line interface support only fixed rate.
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To configure the line probing:
1. From the SHDSL Port Configuration menu, select Line Prob.
The display is refreshed and a new value appears.
2. Select Save to save the changes.
Configuring the Line Interface Type
You can configure the ASMi-52 units with 4-wire interface to operate over 2-wire
lines. Selecting the 2-wire operation mode disables pin 1 and pin 2 of the RJ-45 line
connector.
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To configure the line interface type for ASMi-52 units:
1. From the SHDSL Port Configuration menu, select Configured wire
The display is refreshed and a new value appears (2W or 4W).
2. Select Save to save the changes
3. Reset ASMi-52 in order to active the change.
Setting the Loop Attenuation Threshold
Loop attenuation is difference (in dB) between the power transmitted from the
ASMi-52 modem and the power received by the unit operating at the other side of
the application. By setting the threshold, you instruct the modem to generate minor
alarm (LOOP ATTN. OVER LINE A/B), if selected loop attenuation threshold value is
exceeded.
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To set the loop attenuation threshold:
1. From the SHDSL Port Configuration menu, select Loop attenuation threshold.
2. Enter the desired value (0 dB to 127 dB).
3. Select Save to save the changes.
Note