ADC Modem MM701G, Руководство пользователя

Страница: 38 / 108

Managing DSL
32 MM701G User Manual
2 Configure the following parameters as supplied by your service provider:
3 Click Apply, then save changes using “Saving Changes” on page 38 .
Parameter Description
Exec Mode Select CPE or CO. For point-to-point connections, one modem must
be configured for CPE and the other for CO. For all other applications,
select CPE.
Standard Select Annex A or Annex B (Default: Annex A). Annex A and Annex B
are both transmission standards. Annex A is most often used in North
America. Annex B is most often used in Europe.
Startup Margin Select a value from 2 DB to 15 DB. Applies only to Rate-Adaptive mode
(Default: 2 DB).
Power Backoff Select Enable or Disable (Default: Enable).
Clock Offset Do not change from factory-ship configuration.
Upstream Frame Sync Word Do not change from factory-ship configuration.
Upstream Stuffbits Do not change from factory-ship configuration.
Downstream Frame Sync Word Do not change from factory-ship configuration.
Downstream Stuffbits Do not change from factory-ship configuration.
Encoder Coefficient A Do not change from factory-ship configuration.
Encoder Coefficient B Do not change from factory-ship configuration.
Minimum Base Rate Enter a value from 1 to 36 to select the minimum acceptable data rate
in Rate-Adaptive mode. Rate is equal to N*64kbps, where N is the
selected value (Default: 1).
Maximum Base Rate Enter a value from 1 to 36 to select the maximum acceptable data rate
in Rate-Adaptive mode. Rate is equal to N*64kbps, where N is the
selected value (Default: 36).
Minimum Sub Rate Enter 0 or 1 (Default: 0).
Maximum Sub Rate Enter 0 or 1 (Default: 1).
Wire Pair Mode Select Single or Two (Default: Single).
Asymmetric PSD Select Disabled, 1544 kb, or 784 kb (Default: Disabled).
Bit Rate Mode Select Adaptive Rate or Fixed Rate (Default: Adaptive Rate).
Test Bit Rate Select a value from 72K to 2368K (Default: 2320K).
SNR Margin Limit Enter a value from -64 to 63. Used to control the front panel LED.
(Default: 4).