SAGEM 3P@C
Figure
Here:
P refers to the distribution frame of
W refers to the PSTN distribution frame of the ADSL equipment
N refers to the subscriber line distribution frame for the ADSL equipment
2)ADSL parameter configuration
Based on the service types selected by subscribers, the ports related to the ADSL Central office terminal should be configured with the related parameters, which includes the ADSL working mode, channel working mode, the interleaving depth in the interleaving mode, upstream/downstream destination noise margin, upstream/downstream maximum/minimum rate. These parameters are relevant to the QoS and functions of subscribers.
3) Testing the ADSL connection parameters
After the ADSL equipment has finished with its jumper setting in the distribution room, the connection test needs to be done in the actual environment, to ensure the commissioning of the ADSL service.
The Harbor Network Co., Ltd sets the parameters as follows in the full configuration of the laboratory equipment based on the reality of lines.
Target noise 6db
Maximum downstream rate 8160Kbps
Maximum upstream rate 1024Kbps
Interleaving mode, upstream/downstream interleaving depth of 24 ms And in the case of 0.4mm core diameter, the test reference data is as follows:
Table
Cabl | Downs | Upstre | Downs | Upstre | Downstream | Line | Central |
es | tream | am | tream | am | attenuation | upstrea | office |
Leng | rate | rate | noise | noise | Line | m | output |
th | (Kbps) | (Kbps) | margi | margin | downstream | attenuati | Power |
(km) |
|
| n (dB) | (dB) | attenuation | on (dB) | output |
|
|
|
|
| (dB) |
| (dB) |
1 | 7616 | 896 | 8 | 7 | 22 | 15.5 | 20 |
2 | 6624 | 896 | 6 | 6 | 40.5 | 28 | 21 |
3 | 3552 | 768 | 6 | 5 | 56.5 | 39.5 | 18 |
4 | 1184 | 448 | 7 | 6 | 63.5 | 50 | 15 |
3P@C Installation Manual
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SAGEM SA