4.3.5.1 Network Direct Station Selection (NDSS)
Description
When PBXs are networked using ISDN or V-IPGW cards, it is possible to assign flexible buttons as Network
Direct Station Selection (NDSS) buttons. These buttons are used to monitor the status of extensions connected
to up to seven other PBXs in the network, and to make or transfer calls to those extensions with one touch,
like normal DSS buttons. This allows operator functions to be centralised even when there are offices in remote
locations.
NDSS buttons show the status of the monitored extension as follows:
Light pattern Status
Off The monitored extension is idle.
Red on The monitored extension is busy or has set DND for trunk calls.
[Example Network]
PBX-1
Network
ID 1
PBX-2
Network
ID 2
2001 (busy)
2002 (idle)
4001 (idle)
PBX-3
Network
ID 0
PBX-4
Network
ID 3
Extn. 2001
Extn. 2002
Extn. 4001
1001 (busy)
Extn. 1001
Extn. 2002
Monitor extension
Monitor
extension
[Programming Procedure]
1. Routing Table Assignment
TIE Line Routing and Modification tables must have been programmed in advance for all PBXs in the
network, to allow calls to be made and transferred between PBXs
(® 4.3.1 TIE Line Service).
In the programming example that follows, the PBXs in the network use the Extension Number method, as
shown in the illustration above. However, the PBX Access Code method can also be used.
2. Network PBX ID Assignment
Assign a Network PBX ID to each PBX in the network.
® 17.2 PBX Configuration—[9-2] Private Network—Network Data Transmission—
Network Data
Transmission for Centralised Operator Feature
—Network PBX ID
• IDs 1-8: Can monitor extensions at other PBXs, and transmit monitor data about local extensions. Each
ID number can be assigned to one PBX within the network.
• ID 0: Retransmits monitor data throughout the network. This ID number can be assigned to multiple
PBXs.
3. QSIG Port Setting [Monitored PBX]
450 Feature Guide
4.3.5 QSIG Enhanced Features
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