Configuration
3-25
9124-A2-LB20-00 March 2000

Table 3-4. Network Physical Interface Options (2 of 4)

Bit Stuffing
Possible Settings: 62411, Disable
Default Setting: 62411
Determines the type of bit insertion to provide ones density requirements for data
transmitted to the network.
Display Conditions This option does not appear when Line Coding Format is set
to B8ZS.
62411 Inserts a one in the data after 15 consecutive zeros are received or the density
of ones falls below 12.5%. This setting complies with AT&T TR 62411, but is not
recommended for frame relay data because it inserts errors in the data traffic.
Disable Disables bit stuffing. Ones density is not enforced on data sent to the
network.
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
Table 3-3, 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 units 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.