This TS specifies the stage three, Protocol Description of the network feature Operator Determined
Barring (ODB) of IMS Multimedia Telephony Services. It is based on the requirements described in
It provides the protocol details in the IP Multimedia (IM) Core Network (CN) subsystem based
on the Session Initiation Protocol (SIP) and the Session Description Protocol (SDP). In addition, it provides protocol details for XCAP for barring of supplementary services configuration.
This TS is applicable to:
the Application Server (AS) intended to support Operator Determined Barring for communications;
the AS that provides the XCAP based interface for manipulation of the settings for a supplementary service as
defined in TS 24.623; and
the AS that supports the SIP based configuration for a supplementary service as defined in TS 24.238.