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In this section:

GPRS-IMS-Bundled Authentication (GIBA) Authentication

In the IMS architecture, the registrations (including the emergency registrations) are handled by the S-CSCF through the P-CSCF (home or visited). However, in case of S8HR model, there is no NNI between the P-CSCF at the VPLMN and the S-CSCF at the HPLMN. Thus, the P-CSCF cannot forward the registration to the S-CSCF. The P-CSCF in this scenario acts as a registrar for the emergency registrations originated from the S8HR inbound roamer and also route emergency calls from such users to the PSAP.


S8 Home Routing (S8HR) Support

The S8 Home Routing (S8HR) uses the LTE S8 interface for transporting VoLTE traffic between the visited and home network as data traffic.


Command Syntax

To configure the flag gibaSupportForS8hrInboundUser, execute the following command:

% set addressContext <addressContext> zone <zone> sipTrunkGroup <sipTrunkGroup> signaling gibaSupportForS8hrInboundUser <disabled | enabled>

Command Parameters

SDP 100 Release Interworking For PRACK Parameters

ParameterDescription
gibaSupportForS8hrInboundUser

Indicates the GPRS-IMS-Bundled Authentication (GIBA) procedure support for S8HR inbound user.

The options are:

  • disabled – The GIBA procedure is not applied for the S8HR inbound user.
  • enabled – (default) The GIBA procedure is applied for the S8HR inbound user.

Configuration Example

% set addressContext default zone defaultSigZone sipTrunkGroup TG1 signaling gibaSupportForS8hrInboundUser enabled

 

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