Panasonic KX-TDA50 Feature Manual page 239

Set the transmission setting for each port according to the layout of your network, so that extension
status information can travel between NDSS monitor PBXs.
[Example ISDN Network Port Setting]
Network ID 1
4001 NDSS
Idle
Busy
IP-GW-QSIG
IP data is routed through the network according to the routing tables of the IP-GW cards. When using
VoIP, it is necessary to identify the monitor PBXs, to which to transmit extension status information, for
each card that will be used. This is done by specifying the extension number of any extension (for
example, the PBX operator) at the monitor PBX as a Network Operator extension for that IP-GW card.
[Example VoIP Network]
Network
4001 NDSS
Idle
Busy
Mixed Network
When using the NDSS feature over a mixed network containing both VoIP portions and ISDN line
portions, it is possible to set whether status information will be transferred between VoIP and ISDN
cards within each PBX. For example, if the monitor PBX is on a VoIP network, and monitored PBXs are
on an ISDN network, the PBX that acts as a gateway between the VoIP and ISDN networks must have
this setting enabled for ISDN to VoIP.
4.
Network Monitor Extension Registration [Monitor PBX]
Register the extensions (attached to other PBXs) that will be monitored. A maximum of 250 extensions
PBX-1
OFF
ON
4001
Busy
ON
PBX-3
OFF
4001
Busy
ON
4001
Busy
PBX-5
PBX-1
ID 1
IP Network
PBX-3
PBX-2
OFF
Network ID 0
OFF
OFF
PBX-4
ON
Network ID 3
PBX-2
PBX-4
Network
ID 2
1.13 P
4001
Idle Busy
4001 NDSS
Idle
Busy
4001
Idle Busy
Feature Manual 239