In this section:
The SBC supports a flexible policy mechanism to facilitate dynamic routing and policy decisions based on any SIP message information element whereby routing and policy selection criteria are provisioned by the operator. An information element can be anything in the message, such as the following examples:
The flexible policy process is summarized below:
Flexible Policy Mechanism
Flexible Policy Mechanism on SBC-PSX
The SBC supports creating a SIP adaptor profile designated for the flexible policy mechanism. This flexiblePolicyAdapterProfile
profile is provisioned and attached to either/both the ingress Trunk Group or Ingress Zone. If flexiblePolicyAdapterProfile
is provisioned both at the trunk group and zone, the trunk group’s profile takes precedence. If inputAdapterProfile
is configured, it is applied first to manipulate the PDU and then flexiblePolicyAdapterProfile
rules are applied on the manipulated PDU.
For CLI or EMA configuration details, refer to:
Refer to Configuring Dynamic Policies and Routing Using Flexible Policy and Routing Feature for best practice article.
The SBC applies flexible policy rules on received SIP messages to store information in variables. These variables are then passed to PSX over the Diameter+
interface in a policy request message.
The PSX uses the received information contained in these variables as a part of its enhanced Routing and Policy decision making. Refer to PSX documentation for additional details.