2.3.2. Certificates 
A Digital certificate contains name, serial number, expiration date and the certificate holder's public key along with the digital signature of the certificate issuing authority. By default, the OpenScape Mobile Pro devices communicate to these servers: the OpenScape HAProxy server and OpenScape Session Border Controller (SBC).
The OpenScape Mobile Pro Application uses the following certificates:
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Root CA Certificate - a digital certificate that issues the Client and Server certificates. The Root CA Certificate is installed on your device, as well as the server
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Server Certificate - a digital certificate that identifies the Server to your device. The Server certificate is not installed on the device but on the Servers.
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Client Certificate - a digital certificate that identifies your device as legitimate device to the Server. The Client certificate is installed on the device.
IMPORTANT:
Certificates are an important part of the configuration of the OpenScape Mobile Pro.
Please refer to the chapter Certificates at the end of this document for further information and instructions on how to install
the appropriate certificate.
‣ Parent topic: Section 2.3. How to Configure OpenScape Mobile Pro