Cisco TelePresence Administrator's Manual page 442

Reference material
Command reference — xConfiguration
Registration DenyList [1..2500] Pattern Type: <Exact/Prefix/Suffix/Regex>
Specifies whether the entry in the Deny List is a prefix, suffix, regular expression, or must be matched exactly. Default: Exact.
Exact: the string must match the alias character for character.
Prefix: the string must appear at the beginning of the alias.
Suffix: the string must appear at the end of the alias.
Regex: the string will be treated as a regular expression.
Example: xConfiguration Registration DenyList 1 Pattern Type: Exact
Registration RestrictionPolicy Mode: <None/AllowList/DenyList/Directory/PolicyService>
Specifies the policy to be used when determining which endpoints may register with the system. Default: None.
None: no restriction.
AllowList: only endpoints attempting to register with an alias listed on the Allow List may register.
DenyList: all endpoints, except those attempting to register with an alias listed on the Deny List, may register.
Directory: only endpoints who register an alias listed in the local Directory, may register.
PolicyService: only endpoints who register with details allowed by the Policy Service, may register.
Example: xConfiguration Registration RestrictionPolicy Mode: None
Registration RestrictionPolicy Service DefaultCPL: <S: 0,255>
The CPL used by the VCS when the remote service is unavailable. Default: <reject status='504' reason='Policy Service Unavailable'/>
Example: xConfiguration Registration RestrictionPolicy Service DefaultCPL: "<reject status='403'
reason='Service Unavailable'/>"
Registration RestrictionPolicy Service Password: <S: 0,82>
Specifies the password used by the VCS to log in and query the remote service. The maximum plaintext length is 30 characters,
which will then be encrypted.
Example: xConfiguration Registration RestrictionPolicy Service Password: "password123"
Registration RestrictionPolicy Service Path: <S: 0,255>
Specifies the URL of the remote service.
Example: xConfiguration Registration RestrictionPolicy Service Path: "service"
Registration RestrictionPolicy Service Protocol: <HTTP/HTTPS>
Specifies the protocol used to connect to the remote service. Default: HTTPS.
Example: xConfiguration Registration RestrictionPolicy Service Protocol: HTTPS
Registration RestrictionPolicy Service Server [1..3] Address: <S: 0,128>
Specifies the IP address or Fully Qualified Domain Name (FQDN) of the remote service.
Example: xConfiguration Registration RestrictionPolicy Service Server 1 Address: "192.168.0.0"
Registration RestrictionPolicy Service Status Path: <S: 0..255>
Specifies the path for obtaining the remote service status. Default: status
Example: xConfiguration Registration RestrictionPolicy Service Status Path: status
Registration RestrictionPolicy Service TLS CRLCheck Mode: <On/Off>
Controls certificate revocation list checking of the certificate supplied by the policy service. When enabled, the server's X.509
certificate will be checked against the revocation list of the certificate authority of the certificate. Default: Off.
Example: xConfiguration Registration RestrictionPolicy Service TLS CRLCheck Mode: Off
Cisco VCS Administrator Guide (X8.1.1) Page 442 of 507