Chapter 13 xDSL Port Setup

 

Table 20 xDSL Port Setting (continued)

 

LABEL

DESCRIPTION

 

Alarm Profile

Select the port’s alarm profile. The alarm profile defines alarm thresholds for the

 

 

ADSL port. The IES-612-51A sends an alarm trap and generates a syslog entry

 

 

when the thresholds of the alarm profile are exceeded (see Section 14.6 on

 

 

page 133).

 

 

 

 

IGMP Filter Profile

The IGMP filter profile defines which multicast groups a port can join. Select a

 

 

profile of IGMP filter settings to assign to this port. Use the IGMP Filter Profile

 

 

screen to configure IGMP filter profiles (see Section 14.8 on page 135).

 

 

 

 

ADSL2/2+ feature

These are features available with ADSL2/2+. The subscriber’s ADSL device

 

 

must also support the individual features in order to use them. At the time of

 

 

writing these features have not been fully tested and their performance and

 

 

interoperability cannot be guaranteed.

 

 

 

 

Annex L

Enable Annex L to use reach extended ADSL2. This allows increased

 

 

connection distances.

 

 

 

 

Annex M

Enable Annex M to use double upstream mode. This has the upstream

 

 

connection use tones 6 to 63.

 

 

 

 

Annex I

Enable Annex I to use all digital mode. With Annex I, the ADSL connection uses

 

 

the full spectrum of the physical line and the user can not use POTS or ISDN

 

 

service. This increases the upstream data rate.

 

 

Note: The subscriber cannot use POTS or ISDN services when

 

 

you enable Annex I.

 

 

 

 

PMM

Enable the Power ManageMent (PMM) feature to reduce the amount of power

 

 

used overall and reduce the instances of the connection going down. PMM

 

 

increases or decreases the transmission power based on line conditions. PMM

 

 

also decreases the number of service interruptions.

 

 

Select L2 to have the ADSL connection use power saving mode and reduce the

 

 

rate when there is no traffic. The rate comes back up when there is traffic.

 

 

Select L3 to use both power management modes L2 and L3. L3 puts the ADSL

 

 

connection to sleep mode.

 

 

L0 power mode uses no power reduction. See the ITU-T G.992.3 standard for

 

 

more on PMM and the power modes (states).

 

 

 

 

SRA

Enable Seamless Rate Adaptation (SRA) to have the IES-612-51A

 

 

automatically adjust the connection’s data rate according to line conditions

 

 

without interrupting service.

 

 

 

 

 

Sudden spikes in the line’s noise level (impulse noise) can cause errors and

 

 

result in lost packets. Set the impulse noise protection minimum to have a buffer

 

 

to protect the ADSL physical layer connection against impulse noise. This

 

 

buffering causes a delay that reduces transfer speeds. It is recommended that

 

 

you use a non-zero setting for real time traffic that has no error correction (like

 

 

videoconferencing).

 

 

 

 

US INP

Set the minimum upstream (US) impulse noise protection setting.

 

 

 

 

DS INP

Set the minimum downstream (DS) impulse noise protection setting.

 

 

 

 

Max US TX PSD

Specify the maximum upstream transmit power. The unit of measure is 0.1 dBm/

 

 

Hz; for example, to set the maximum upstream transmit power to -10 dBm/Hz,

 

 

set this value to -100.

 

 

 

 

Max DS TX PSD

Specify the maximum downstream transmit power. The unit of measure is 0.1

 

 

dBm/Hz; for example, to set the maximum downstream transmit power to -10

 

 

dBm/Hz, set this value to -100.

 

 

 

 

L0 Time

Set the minimum time (in seconds) that the ADSL line must stay in L0 power

 

 

mode before changing to the L2 power mode.

 

 

 

 

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IES-612-51A User’s Guide