
Certificate Settings  System Security
Polycom, Inc.  37
Table 3-1 Fields on the Certificate Settings page 
Column  Description
Enable OCSP  Enables the use of Online Certificate Status Protocol as 
a means of obtaining the revocation status of a 
certificate presented to the system. 
If OCSP responder URL is not specified, the system 
checks the certificate’s AuthorityInfoAccess (AIA) 
extension fields for the location of an OCSP responder: 
•If there is none, the certificate fails validation. 
•Otherwise, the system sends the OCSP request to 
the responder identified in the certificate. 
If OCSP responder URL is specified, the system sends 
the OCSP request to that responder. 
The responder returns a message indicating whether 
the certificate is good, revoked, or unknown. 
If OCSP certificate is specified, the response message 
must be signed by the specified certificate’s private key. 
OCSP responder URL  Identifies the responder to be used for all OCSP 
requests, overriding the AIA field values. 
If OCSP certificate is specified, the response message 
must be signed by the specified certificate’s private key. 
OCSP certificate  Select a certificate to require OCSP response 
messages to be signed by the specified certificate’s 
private key. 
Store OCSP 
Configuration 
Saves the OCSP configuration. 
Identifier Common name of the certificate. 
Purpose Kind of certificate: 
•Server SSL is the DMA system’s public certificate, 
which it presents to identify itself. By default, this is 
a self-signed certificate, not trusted by other 
devices. 
•Trusted Root CA is the root certificate of a certificate 
authority that the DMA system trusts. 
•Intermediate CA is a CA certificate that trusted root 
CAs issue themselves to sign certificate signing 
requests (reducing the likelihood of their root 
certificate being compromised). If the DMA system 
trusts the root CA, then the chain consisting of it, its 
intermediate CA certificates, and the server 
certificate will all be trusted. 
Expiration Expiration date of certificate.