TANDBERG D13192 manual Intelligent Call Management ICM

Technical Description of TANDBERG Gateway with software version G2

Scenario: TANDBERG Gateway is connected via a CSU (i.e. a NT ‘Network Termination’) as follows:

TANDBERG Gateway –cableA–CSU–cableB–Network

If a CSU loses framing/sync from the network (example: a bad cable B), it shall no longer send valid framing out on cable A towards the TANDBERG Gateway. Instead it transmits "Blue Alarm". Seen from the TANDBERG Gateway receiving blue alarm, this means that the network on the far side of the CSU is unavailable.

4.1.7Intelligent Call Management (ICM)

By using TANDBERG's inbuilt Intelligent Call Management (ICM), TANDBERG Gateway conferences can be made from data rates up to 2 Mbps via ISDN networks.

ICM is a highly sophisticated feature provided by the TANDBERG Gateway that e.g. makes the connection between two sites more reliable and safe. If the ISDN network drops channels during a meeting, the conference will not shut down but adjust to the remaining number of available channels6. This ability is called ‘Downspeeding’ and is in accordance to the BONDING Mode 1 standard.

By defining a maximum bandwidth for the different services (DID, IVR, TCS-4, Hotline, H.323 services), all connections will be restricted to these bandwidths.

If the requested bandwidth is not available in the TANDBERG Gateway or in the receiving endpoint, the TANDBERG Gateway will set up the connection using the available resources.

6 If the connected site does not support downspeeding, the site will drop out of the call.

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