Ultimate reliability

through self-monitoring, redundant systems

In critical situations, every second – and every word – counts. Commend systems are designed specifically to ensure that every single call gets through, no matter what. Always, without exception. This is why Commend systems monitor their own functionality:

Line Monitoring checks the connections between the Intercom stations and the Server.
The Intercom stations run continuous tests on the signal path between their loudspeaker and microphone. More
Self-testing buttons for critical functions perform regular button activation simulation tests (special buttons are required).
To protect Intercom stations against vandalism, sabotage detection switches will trigger an alarm at the Control Desk if the device is tampered with.
Server monitoring and redundancy ensure the required high availability.

Promises you can rely on

Full 24/7 availability.
Control Desk staff are immediately notified in the event of a problem (e. g., extreme vandalism) to enable instant troubleshooting.
Very low system inspection requirements – no need for manual testing (saving time and costs).

Station- and server-side function monitoring and redundancy

Software Intercom Server VirtuoSIS

Entire virtual environments can be backed up and migrated reliably without interruptions. As a result, scheduled downtimes are a thing of the past. After an unscheduled downtime, connections and functions are restored within a very short time. Ultimate availability ‒ ultimate security (Mirroring*) *Mirroring: VMWare Enterprise Edition provides a Fault Tolerance (FT) function to ensure continued availability for all applications in case of a server failure.

Server redundancy for hardware-based Intercom Servers

Intercom stations can connect to up to three servers simultaneously.
Calls are transmitted via the active server.
Fallback servers within the network allow for reliable redundancy arrangements. In the event of a server or router failure, call connection will be re-routed automatically via the available servers.
Multiple power supply units ensure a redundant supply of operating power. This way, the Server will continue to operate uninterrupted even if a power supply unit fails.

Server redundancy for SIP capable systems

Intercom stations can connect to up to three servers simultaneously.
Calls are transmitted via the active server.
In case none of the servers can be reached, the system can try to establish a serverless connection as a last resort ‒ e.g., by setting off a call to all Intercom stations on the network. Of course, this is also supported by serverless systems.