Important information:

CMA Card is not working on new V3 Mainboards (X1, X3, X5) and needs to be replaced by successor module CMAe.

For more information see 4.2 Phased Out Cards and Modules in latest Sales Information 1.4

Cards that are in the product phase out or have already been phased out can no longer be ordered.
The operation of phased out cards in the OpenScape Business communication platform is technically not
actively prevented and is still possible in many cases.
Technical support is no longer provided for these cards in case of problems. The cards have to be replaced by successor modules from the current product portfolio.
When the OpenScape Business SW and HW are technically enhanced, the phased-out cards are no longer
considered. This can mean that they can no longer be operated from a certain HW or SW version on. No further information is provided in these cases. The cards must then be exchanged against the successor of the current portfolio.

Link to successor CMAe:

https://support.businesscom.nl/hc/nl/articles/211010443-CMAe-kaart-voor-OpenScape-Business-DECT-