Panasonic KX-NS1000 User Manual page 354

4.2.3 One-look Networking Survivability
[Example]
Port 1
Port 2
Port 3
Port 4
PBX 1
Port 1
Port 2
Port 3
Port 4
PBX 2
If PBX 3 has only 4 activation keys, operation can continue if either PBX 1 or PBX 2 goes offline, but if both
PBX 1 and PBX 2 go offline, the number of activation keys will be insufficient.
However, the activation keys for extensions at the Master unit are copied to the Backup Master unit in
Backup Master mode. Therefore, if the extensions specify the Backup Master unit as their secondary PBX,
additional activation keys are not necessary.
•
KX-UT extensions connected over a remote connection via an SBC are subject to further limitations when
using this feature. For details, see "5.2.2.3 Simple Remote Connection".
Installation Manual References
8.4.2 One-look Networking Survivability—Automatic Rerouting to Secondary PBX
PC Programming Manual References
9.15 PBX Configuration—[1-1] Configuration—Slot—V-IPEXT32—Port Property—Secondary Setting
9.20 PBX Configuration—[1-1] Configuration—Slot—V-UTEXT32—Card Property—Main—
(For S-PS/SIP-CS)
9.21 PBX Configuration—[1-1] Configuration—Slot—V-UTEXT32—Port Property—Secondary Setting
354 Feature Guide
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
PBX 3
: Secondary Connection
With only 4 activation
keys, PBX 3 can accept a
maximum of 2 new
connections.
Failover Timer