Panasonic KX-NS500 Features Guide

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
• 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
PT Programming Manual References
[511] Manager Assignment
Feature Guide References
5.1.6 Manager Features
User Manual References
2.1.6 Allowing Users to Seize an Unavailable Outside Line
(Trunk Busy Out)
110 Feature Guide
2.5.4 Trunk Call Features

Panasonic KX-NS500 Specifications

General

Analog Extensions	Up to 64
VoIP Support	Yes
System Type	Hybrid IP-PBX
Power Supply	AC 100-240V, 50/60Hz
Operating Temperature	0°C to 40°C
Humidity	10% to 90% (non-condensing)
Maximum Extensions	288
IP Extensions	128
VoIP Channels	64
SIP Trunks	64
Networking	Yes, supports networking
Built-in Applications	Call Center
Expandability	Yes, via expansion cards and cabinets
Supported Protocols	SIP, H.323, MGCP
Dimensions	430 x 88 x 367 mm