Paradyne 7984, Руководство пользователя

Страница: 49 / 165

Configuring the Unit Using the Internal Switches
4-5
7970-A2-GB20-00 August 1999
Table 4-2 lists Switchpack S2 definitions.
Table 4-2. Switchpack S2 Definitions (Models 7974 and 7984)
Switch # . . . Allows you to . . .
Default in Bold
1 Control whether the unit is an LTU or an NTU.
OFF = NTU
ON = LTU
2 Control whether the unit automatically adjusts to the best line rate for
conditions, or is fixed at the rate set by Switches S2-3 through S2-5.
OFF = Fixed Rate
ON = AutoRate Enable
3, 4, 5 Control the DSL line rate of the unit. Refer to Table 4-3. If AutoRate is
enabled, DSL Line Rate represents the AutoRate ceiling.
000 (all Off) = 1552 kbps
6 Control whether Telco loopbacks are supported.
OFF = Enabled
ON = Disabled
7 Control whether remote Telco loopbacks are supported.
OFF = Disabled
ON = Enable
8 Emergency Use Only – Switch between two versions of firmware. The
unit has two banks of flash memory used to hold executable firmware.
This switch allows you to change between the two versions of firmware.
This switch is independent from the position of Switch 1 on Switchpack
S1 (switchpack enable/disable).
OFF = Current Firmware
ON = Previous Firmware
Use Table 4-3 to set the DSL Line Rate. Defaults are shown in bold.
Table 4-3. DSL Line Rate, Switches 3–5 on Switchpack S2
(Models 7974 and 7984)
Switch Position
5 4 3
DSL Line Rate
OFF OFF ON (Not supported)
OFF ON OFF (Not supported)
OFF ON ON 400 kbps
ON OFF OFF 528 kbps
ON OFF ON 784 kbps
ON ON OFF 1040 kbps
ON ON ON 1552 kbps
OFF OFF OFF 1552 kbps