Setting Up
4-9
9161-A2-GH30-20
September 1997
Table 4-1.
Network Interface Options (3 of 7)
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.
Network Initiated PLB only appears if 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 T1 access unit to enter a payload loopback
(provided a PLB can be performed in the NAM’s current state). Receiving a
PLB-Release command terminates the PLB.
Disable – The T1 access unit ignores the PLB-Actuate and PLB-Release commands.
NOTE:
When disabled, the unit is not in compliance with ANSIT1.403 or
AT&T TR 54016.
Transmit Timing
Possible Settings: System, Network
Default Setting: System
Allows transmit timing to be selected from either the system master clock source or from
the currently selected network interface.
Transmit Timing only appears for the 9261 Dual T1 NAM.
System – Transmit timing is derived from the current system clock source (set using
System Options, see Table 4-8).
Network – Transmit timing is derived from this interface.
NOTE:
When Network is configured, the clock must be synchronized to the system
clock source.
ANSI Performance Report Messages
Possible Settings: Enable, Disable
Default Setting: Disable
Specifies whether ANSI T1.403 compliance performance report messages (PRMs) are
generated and sent to the network over the ESF FDL every second.
ANSI Performance Report Messages only appears if Line Framing Format is set
to ESF.
Enable – Generates and sends PRMs.
Disable – Does not generate and send PRMs.
