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3. Configuration Options
9000-A2-GB31-00 December 2002
3-19
Transmit Timing
Possible Settings: System, Interface
Default Setting: System
Allows transmit timing to be selected from either the system master clock source or from
the currently selected interface.
System – Transmit timing is derived from the current system clock source (see Tabl e 3- 6,
General System Options).
Interface – Transmit timing is derived from this interface.
NOTE: When Interface is configured, the clock must be synchronized to the system
clock source.
Network Initiated LLB
Possible Settings: Enable, Disable
Default Setting: Enable
Allows the initiation and termination of the line loopback (LLB) to be controlled by the
receipt of LLB-Actuate and LLB-Release commands from the network.
Enable – LLB is controlled by LLB-Actuate and LLB-Release commands. Receiving a
LLB-Actuate command causes the FrameSaver unit to enter a line loopback (provided an
LLB can be performed in the FrameSaver unit’s current state). Receiving an LLB-Release
command terminates the LLB.
Disable – The FrameSaver unit ignores the LLB-Actuate and LLB-Release commands.
NOTE: When disabled, the system is not in compliance with ANSI T1.403 or
AT&T TR 62411.
Network Initiated PLB
Possible Settings: Enable, Disable
Default Setting: Enable
Allows the initiation and termination of the payload loopback (PLB) to be controlled by the
receipt of PLB-Actuate and PLB-Release commands from the network.
Display Conditions – This option only appears when Line Framing Format is set to
ESF.
Enable – PLB is controlled by PLB-Actuate and PLB-Release commands. Receiving a
PLB-Actuate command causes the system to enter a payload loopback (provided a PLB
can be performed in the unit’s current state). Receiving a PLB-Release command
terminates the PLB.
Disable – The FrameSaver unit ignores the PLB-Actuate and PLB-Release commands.
NOTE: When disabled, the unit is not in compliance with ANSI T1.403 or
AT&T TR 54016.
Table 3-7. T1 Network Physical Interface Options (2 of 4)