SDP Transparency Profile Overview
SDP transparency profiles contain a set of rules for declarative SDP attributes that allow the system to pass through declarative attributes that are not natively supported by Cisco Unified Communications Manager from the ingress to the egress call leg. Without an SDP transparency profile, Cisco Unified Communications Manager drops non-supported SDP attributes.
You can configure SDP transparency profiles with multiple rules and apply them to SIP devices or trunks via the SIP profile. In order for the SDP transparency profile to be applied, both call legs must be SIP. You can configure the following types of rules for SDP attributes:
Property—If a rule is configured for a property attribute, Cisco Unified Communications Manager passes through the SDP attribute unless the attribute has a value.
- Any Value—If a rule is configured for any value, the SDP attribute gets passed through so long as it has a value that consists of at least one non-white space character.
- Value From List—If a rule is configured using this option, the SDP attribute gets passed through so long as it matches one of the specified values. You can configure up to five possible values