Ott Auth Tab

In VoLTE Node testing, the OTT Access Auth on the Gm > Control tab allows you to define the RTT OTT Client.

Available in In AMF Nodal, IP Application Node, MME Nodal, SGW Nodal, Network Host and Wifi Offload Gateway Nodal test cases. Enables the OTT Access Auth Tab under the Gm Interface.

The difference between native VOLTE Client and RTT OTT Client can be summarized as following:

RTT OTT Client and native VOLTE Client use different APNs
Native VOLTE Client’s Public and Private Identities are provisioned on LS GUI (Phone Book). RTT OTT Client receives its Public and Private Identities from the network during user authentication process.
RTT OTT has to initiate user authentication against API GW using HTTP/HTTPS protocol prior to IMS registration. This authentication is based on OAuth authorization framework defined by RFC 6749.
As a result of OAuth RTT OTT Client receives
- IMPU (Public User ID) that will be used instead of the one that is configured on GUI;
- IMPI (Private User ID) that will be used instead of the one that is configured on GUI;
- SBC FQDN: usually SBC FQDN has to be resolved by DNS and used as SBC/P-CSCF IP address. To simplify it Landslide VOLTE solution has P-CSCF IP address configured on GUI.