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Configuration Option Tables
A-5
7984-A2-GB20-10
February 1999
Table A-2. DSX-1 Interface Options (2 of 2)
Line Coding Format
Possible Settings: AMI, B8ZS
Default Setting: B8ZS
Specifies the line coding format to be used by the DSX interface.
AMI – Indicates the line coding format used by the DSX interface is Alternate Mark
Inversion (AMI).
B8ZS – Indicates the line coding format used by the DSX interface is B8ZS.
Line Equalization
Possible Settings: Signaling, Data
Default Setting: Signaling
Compensates for signal distortion for a DSX-1 signal over a given distance.
0–133 feet – Provides equalization for a cable length up to 133 feet.
133–266 feet – Provides equalization for a cable length up to 266 feet.
266–399 feet – Provides equalization for a cable length up to 399 feet.
399–533 feet – Provides equalization for a cable length up to 533 feet.
533–655 feet – Provides equalization for a cable length up to 655 feet.
Send AIS on Network Failure
Possible Settings: Enable, Disable
Default Setting: Enable
Specifies the action taken on the signal transmitted to the DSX when a valid signal
cannot be recovered from the network interface (LOS or cognitions OOF, AIS, or EER).
Enable – An Alarm Indication Signal (AIS) is sent to the DSX-1 port in the event of an
LOS or OOF condition on the DSX-1 interface.
Disable – The failed signal on the interface is passed through to the DSX-1 network
unchanged.
Send All Ones on Network Failure
Possible Settings: Enable, Disable
Default Setting: Enable
Specifies the action taken on the signal transmitted to the DSX when a valid signal
cannot be recovered from the network interface (LOS or cognitions OOF, AIS, or EER).
Enable – A pattern of all ones is sent to the DSX-1 port in the event of an LOS or OOF
condition on the DSX-1 interface.
Disable – The failed signal on the interface is passed through to the DSX-1 network
unchanged.
Primary Clock Source
Possible Settings: DSX, Internal
Default Setting: Internal
Specifies where the unit will derive its timing from.
H Primary Clock Source is available only when the unit is configured as an LTU. If
DSL Line Rate is set lower than 1552 kbps, Primary Clock Source is forced to
DSX-1 and cannot be changed.
Internal – The clock source is derived from the internal oscillator.
DSX – The clock source is derived from the DSX interface.