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Conditions
•
This feature is not available for the following ELCOT/LCOT cards:
KX-TDA6381 (ELCOT16)
KX-TDA6382 (ELCOT16)
KX-TDA0181AL (LCOT16)
KX-TDA0180AL (LCOT8)
PC Programming Manual References
9.24 PBX Configuration—[1-1] Configuration—Slot—Port Property - LCO Port—Reverse Detection
2.5.4.6 Trunk Busy Out
Description
The PBX can monitor the loop current sent through analogue trunks, preventing users from seizing trunks
where a loop current is not detected. When loop currents are not detected, trunks are set to Busy Out
status, and become unable to make or receive calls. A trunk in Busy Out status cannot be used for making
calls as a TIE line, as part of a trunk group, or with the ARS feature, and cannot receive trunk calls. If a user
tries to seize a trunk set to Busy Out status, the user will hear a reorder tone.
This is useful if some or all trunks are occasionally unavailable because of problems with the external
telecommunications environment.
Conditions
•
This feature is not available for the following LCOT cards:
KX-NCP1180NE (LCOT4)
KX-TDA0181NE (LCOT16)
KX-TDA0180NE (LCOT8)
KX-TDA0183NE (LCOT4)
•
Loop current detection is performed on active trunks whenever the trunk is seized and/or at fixed
intervals.
•
When a trunk is in busy-out status, loop current detection is performed at fixed intervals, returning the
trunk to in-service status once a loop current is detected. An extension assigned as the manager can
manually change the trunk back to in-service status.
•
Trunk status changes are recorded in the error log of the PBX.
•
Busy Out status is maintained even when the PBX is reset.
•
Busy Out status is cleared when:
–
a call is successfully received (i.e., a loop current is detected) on that trunk.
–
the S-CO button for that trunk is pressed and a loop current is detected.
PC Programming Manual References
9.24 PBX Configuration—[1-1] Configuration—Slot—Port Property - LCO Port—Busy Out Status
10.6.1 PBX Configuration—[2-6-1] System—Numbering Plan—Main—Features—Busy Out Cancel
10.7.1 PBX Configuration—[2-7-1] System—Class of Service—COS Settings—Manager—Manager
10.9 PBX Configuration—[2-9] System—System Options—Option 5—Busy Out—Busy Out for Analogue CO
Feature Manual References
5.1.6 Manager Features
2.5.4 Trunk Call Features
Feature Manual
89
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