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4. Configuration Options
9128-A2-GB20-80 September 2002
4-47
Line Build Out (LBO)
Possible Settings: 0.0, –7.5, –15, –22.5
Default Setting: 0.0
Specifies the line build out for the signal transmitted to the ISDN.
0.0, –7.5, –15, –22.5 – Specifies line build out in dB.
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 ISDN.
Enable – LLB is controlled by LLB-Actuate and LLB-Release commands. Receiving a
LLB-Actuate command causes the system to enter a line loopback (provided an LLB can
be performed in the system’s current state). Receiving an LLB-Release command
terminates the LLB.
Disable – The system 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 ISDN.
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 system’s current state). Receiving a PLB-Release command
terminates the PLB.
Disable – The system 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.
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 ISDN over the ESF facility data link every second.
Display Conditions
– This option only appears when Line Framing Format is set to ESF.
Enable – Generates and sends PRMs.
Disable – Does not generate and send PRMs.
Table 4-10. ISDN PRI DBM Physical Interface Options (2 of 3)