About Policy Services - Cisco TelePresence Administrator's Manual

About policy services

Policy services are typically used in large-scale deployments where policy decisions can be managed
through an external, centralized service rather than by configuring policy rules on the VCS itself.
You can configure the VCS to use policy services in the following areas:
Registration Policy
n
Search rules (dial plan)
n
Call Policy
n
User Policy (FindMe)
n
More information about policy services, including example CPL, can be found in the
deployment guide.
Policy service request parameters
When the Cisco VCS uses a policy service it sends information about the call or registration request to the
service in a POST message using a set of name-value pair parameters.
The service can then make decisions based upon these parameters combined with its own policy decision
logic and supporting data (for example lists of aliases that are allowed to register or make and receive calls,
via external data lookups such as an LDAP database or other information sources).
The following table lists the possible parameters contained within a request and indicates with a ü in which
request types that parameter is included.
Parameter name
ALIAS
ALLOW_INTERWORKING
AUTHENTICATED
AUTHENTICATED_SOURCE_ALIAS
AUTHENTICATION_USER_NAME
CLUSTER_NAME
DESTINATION_ALIAS
DESTINATION_ALIAS_PARAMS
GLOBAL_CALL-SERIAL_NUMBER
LOCAL_CALL_SERIAL_NUMBER
METHOD
NETWORK_TYPE
Cisco VCS Administrator Guide (X7.2)
Values
TRUE / FALSE
TRUE / FALSE
GUID
GUID
INVITE / ARQ / LRQ /
OPTIONS / SETUP /
REGISTER /
SUBSCRIBE / PUBLISH
IPV4 / IPV6
External policy on VCS
Registration Search
Policy rules
ü
ü
ü ü
ü
ü
ü ü
ü
ü
ü
ü
ü ü
ü
Reference material
Call User
Policy Policy
ü ü
ü ü
ü ü
ü ü
ü ü
ü ü
ü ü
ü ü
ü ü
ü ü
ü ü
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