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Chapter 3. Operation
60 TSU 600 User Manual 61200.076L2-1
XMIT PRM
• Enables and disables the sending of PRM data on
the facility data link (FDL). The PRM data continues
to be collected even if XMIT PRM is disabled (possible
only with ESF Format).
• Options: Off, On.
CLOCK SOURCE
• Selects the clock source for transmission toward the
network from the NI.
• Options: Network, Base DTE, Internal, and
Secondary (SI).
Base DTE and Internal are available only if no secondary
interface is installed.
SET LBO
• Selects the line build out for the network interface.
In AUTO mode, the TSU 600 sets the LBO based on
the strength of the receive signal and displays the
selected value.
• Options: 0.0 dB, 7.5 dB, 15 dB, 22 dB, Auto.
INBAND LPBCK
• Sets unit to accept or reject the in-band loop up and
loop down codes as defined in ANSI T1.403. This is a
line loopback.
• Options: Accept, Reject.
BIT STUFFING
• When enabled, bit stuffing causes the TSU 600 to
monitor for ones (1s) density violations and insert a
one (1) when needed to maintain ones at 12.5 %.
• Options: Enable, Disable.