AMT/PTD/PBX/0058/4/6/EN Installation and Maintenance Manual - Aastra 5000
Page 98 01/2011 Description et caractéristiques d’un PBX
hardware fault detection is performed. The unavailability time on the cabinet
can, therefore, be up to 3 minutes. ).
Duplicating the hardware functions
During a switchover, once the passive card has become active and functional, all the
hardware functions become automatically available again, through hardware function
redundancy on both cards, and through the centralisation of the front panel connections
on the IUCV-D card.
IP port duplication
Thanks to its integration into the CPU card, the integrated 10/100 T-X Ethernet port is
duplicated. Therefore, all the applications that use this port to connect to the iPBX benefit
from this IP link security. After CPU card switchover, the IP address of this integrated port
remains the same. The MAC address, on the other hand, changes.
Data synchronisation
Data synchronisation is performed progressively, to bring the data on the passive card to
the same level as the active card.
This synchronisation guarantees service continuity after switchover, for the following
functions:
• Subscriber configuration
• Network configuration
• Customisation of digital sets
• Programming functions (except last number redial and automatic callback)
•DECT service
• Directory numbers.
All the sets reconnect automatically. Attendant console reactivation remains at the
operator’s discretion.
Software synchronisation
The system software package and application are synchronised after each software
upgrade on the active card, to bring the software on the passive card to the same level as
the active card: change of version, change of MMC language.
This synchronisation is done once the new software release has been validated by the
iPBX or by the management centre.
This synchronisation guarantees service continuity after switchover, for the following
functions:
• active software release, system and application
• digital set languages and MMC languages