SIP GRUU

SIP Globally Routable User Agent (UA) URIs (GRUU) are designed to reliably route a SIP message to a specific device or end user. This contrasts with a SIP AoR which can refer to multiple UAs for a single user, thus contributing to routing confusion. The Oracle® Enterprise Session Border Controller can perform different behaviors when it finds SIP GRUUs in Contact headers.

User agents supporting GRUU include a GRUU-identifying parameter in the Contact header of dialog forming and target refresh requests. The Oracle® Enterprise Session Border Controller scans for the GRUU parameter in the Contact header either when the message is received on a realm or interface configured for registered endpoints or when the pass-gruu-contact parameter is enabled. Configure an interface for registered endpoints by enabling nat-traversal or registration caching.