Content for  TS 24.167  Word version:  18.1.0

This interior node describes the media type restriction policy.

• Occurrence: ZeroOrOne
• Format: node
• Access Types: Get, Replace
• Values: N/A

The media type restriction policy consists of zero or more media type restriction policy parts. Each media type restriction policy part is described by a child node. A media type is restricted from inclusion in a SDP message according to the media type restriction policy indicated by this interior node, if at least one child node restricts inclusion of the media type in the SDP message. The media type restriction policy does not influence SDP messages exchanged in an IMS emergency call.

This interior node describes the media type restriction policy part.

• Occurrence: ZeroOrMore
• Format: node
• Access Types: Get, Replace
• Values: N/A

The media type restriction policy part consists of a mandatory media type in the Media_type child node and zero or more conditions in child nodes other than the Media_type child node. The media type restriction policy part indicated by this interior node restricts inclusion of a media type in an SDP message if:

1. the media type is indicated in the Media_type child node;
2. the following is true:
   1. this node does not have an IP-CAN child node; or
   2. the following is true:
      1. the SDP message contains an "m=" SDP line of the media type;
      2. the "m=" SDP line is associated with a "c=" SDP line;
      3. the "c=" SDP line indicates an IP address;
      4. the IP address is associated with an IP-CAN bearer; and
      5. the IP-CAN bearer is of an IP-CAN indicated in the IP-CAN child node;
3. the following is true:
   1. this node does not have an ICSI child node; or
   2. the SDP message describes session offered or established by SIP signalling related to an IMS communication service identified in the ICSI child node; and
4. the following is true:
   1. this node does not have a Non-subscribed child node; or
   2. the following is true:
      1. this node has a Non-subscribed child node;
      2. the SDP message contains an "m=" SDP line of the media type;
      3. the "m=" SDP line is associated with a "c=" SDP line;
      4. the "c=" SDP line indicates an IP address;
      5. the IP address is associated with an IP-CAN bearer; and
      6. the UE roams in the IP-CAN of the IP-CAN bearer.

This leaf indicates a restriction applicable for a media type.

• Occurrence: One
• Format: chr
• Access Types: Get, Replace
• Values: a media type as described in Section 8.2.1 of RFC 4566

This leaf indicates a restriction applicable for an IP-CAN.

• Occurrence: ZeroOrOne
• Format: int
• Access Types: Get, Replace
• Values: one of the values specified in Table 5.123-1.

This leaf indicates a restriction applicable for an ICSI.

• Occurrence: ZeroOrOne
• Format: chr
• Access Types: Get, Replace
• Values: an IMS communication service identifier as defined by TS 24.229.

This leaf indicates a restriction applicable when media are transported to or from an SNPN where the UE is not subscribed.

• Occurrence: ZeroOrOne
• Format: null
• Access Types: Get, Replace
• Values: null

This interior node describes the reliable 18x policy. In the absence of this node, the UE sends SIP 18x response reliably or not up to the implementation.

• Occurrence: ZeroOrOne
• Format: node
• Access Types: Get, Replace
• Values: N/A

This interior node describes the reliable 18x policy part.

• Occurrence: OneOrMore
• Format: node
• Access Types: Get, Replace
• Values: N/A

This leaf indicates an ICSI condition.

• Occurrence: ZeroOrOne
• Format: chr
• Access Types: Get, Replace
• Values: an IMS communication service identifier as defined by TS 24.229.

In absence of the parameter, UE applies the reliable 18x policy indicated in the Send_18x_Reliably parameter on all IMS services.

This leaf indicates whether the SIP 18x responses (other than SIP 183 response) against an INVITE request subject to the IMS service indicated in the ICSI leaf are to be sent reliably.

• Occurrence: One
• Format: bool
• Access Types: Get, Replace
• Values: 0, 1
  0
  Indicates that the SIP 18x responses (other than SIP 183 response) are to be sent unreliably.
  1
  Indicates that the SIP 18x responses (other than SIP 183 response) are to be sent reliably.