12
2-WIRE SHORT-RANGE DSL LINE DRIVER (HDSL) WITH 10BASE-T
DIP-S
WITCH
S2
The only setting for S2 is for clocking mode between HDSL Line Drivers. All other
switches are reserved for factory use and must remain in the default configuration.
Default settings are shown in the Table 4-1.
Table 4-1. S2 summary.
Position
Function
Factory Default
S2-1
Reserved
Off
S2-2
Reserved
Off
S2-3
Reserved
Off
S2-4
Reserved
Off
S2-5
Reserved
Off
S2-6
Clock Mode
On
S2-7
Clock Mode
Off
S2-8
Reserved
Off
Switch S2-1, S2-2, S2-3, S2-4, S2-5, and S2-8:
These switches are reserved for factory use and must remain in the factory-default
settings as shown in Table 4-1.
S
witches S2-6 and S2-7: Clock Mode
Use Switches S2-6 and S2-7 to configure internal or receive recover (clocking
derived from the remote HDSL Line Driver across the DSL span) settings. One
Line Driver (typically the CO, or “Central Office” unit) will be set for internal
clock. The remote Line Driver (typically the CP, or Customer Premises unit) will
be set for receive recover clocking. Table 4-2 shows the clock mode settings.
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Receive Recover
