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RADSL Card Configuration
3-13
8000-A2-GB20-50
April 2000
Table 3-2. Ports Options (2 of 3)
DSL Ports (DSL Parameters) A-B-B
Allows configuration of the operational and alarm parameters of the DSL ports. Each
DSL port is configured separately.
Action – Edit to configure the DSL ports. Reset the port to make changes active.
Port # – Enter port 1 to 4 (Default = 0).
RTU Type – Model number of the service node. For Model 8540, selections are
5246/5216 (Default = 5216). For Model 8546, selections are 5446r1/5446r2 (Default =
5446r2). (This field is read-only.)
Port Desc – Enter port description, such as user name, etc. (40 characters maximum).
Tx Power – 0 dB, –3 dB, –6 dB. For the RADSL card. Enter the rate that allows you to
reduce the transmit power by: –3 dB or –6 dB (Default = 0 dB). Short loops require less
power, reducing crosstalk and giving better performance on longer loops in the same
cable bundle.
RTU Tx Power – 0 dB, –3 dB, –6 dB, –9dB. From the RTU. Enter the rate that allows
you to reduce the transmit power by: –3 dB or –6 dB (Default = –6 dB).
Startup Margin – The Startup Margin (SM) field is used to determine the quality of the
connection of the upstream link on system startup. It is used in conjunction with the
adaptive speed fields to determine the initial line speeds of the DSL link. The value is
between –3 and 9. In Adaptive Mode, if the margin falls below SM, the DSL link will be
restarted at a slower speed. If the calculated margin of the next speed is greater than
SM by 3 dB, the speed will increase. Enter –3 to 9 (Default = 3).
Reed-Solomon Interleaving – Long/Short (Default = Long).
Behavior – Fixed/Adaptive (Default = Adaptive). In fixed rate mode, the DSL port will
operate at the specified upstream and downstream speed. In rate adaptive mode, the
rates will not exceed the maximum speed and traps are sent when the links drop below
the minimum, as the transmission characteristics of the loop change.
Fixed: Dn Speed* – 7168/6272/5120/4480/3200/2688/2560/2240/1920/1600/1280/
1024/960/896/768/640/512/384/256 (Default = 2560 kbps).
Fixed: Up Speed* –
1088/952/816/680/544/476/408/340/272/204/136/119/102/90.6/85/68/51/45.3/34/11.3
(Default = 1088 kbps). Enter the fixed upstream speed.
Adaptive: Max Dn Speed* – 7168/6272/5120/4480/3200/2688/2560/2240/1920/1600/
1280/1024/960/896/768/640/512/384/256 (Default = 7168 kbps). Enter the maximum
downstream speed.
* If you select a downstream speed of 2560 or higher, your upstream speed selection is
limited to 1088/952/680/408 kbps.