US 12,348,501 B2
Inter-network IMS registration
Prannoy Kiran Saride, Bellevue, WA (US); Raymond Thomas Ball, Seattle, WA (US); and Kenroy Dwight Shaw, Bellevue, WA (US)
Assigned to T-Mobile USA, Inc., Bellevue, WA (US)
Filed by T-Mobile USA, Inc., Bellevue, WA (US)
Filed on Jul. 14, 2022, as Appl. No. 17/812,557.
Prior Publication US 2024/0022551 A1, Jan. 18, 2024
Int. Cl. H04L 9/40 (2022.01)
CPC H04L 63/08 (2013.01) 20 Claims
OG exemplary drawing
 
1. A method performed by a one or more computing devices configured at a managed access system (MAS) network, the method comprising:
receiving a request for internet protocol (IP) multimedia services from a mobile device;
generating, at a call session control function (CSCF) configured at the MAS network and based at least in part on the request, a multimedia authentication request (MAR);
transmitting the MAR from the CSCF to a diameter routing agent (DRA) using a Cx interface, wherein the CSCF and the DRA are endpoints of at least a leg of the Cx interface;
transmitting, based at least on part on receiving the MAR on the Cx interface, the MAR from the DRA to a destination network associated with the mobile device;
receiving a multimedia authentication answer (MAA) at the DRA from the destination network; and
transmitting the MAA from the DRA to the CSCF,
wherein the MAS network and the destination network are separate and distinct networks.