Patent ID: 9509725
Filing Date: 2016-11-29
CPC Classification: H04L,H04M

Claim Text:
1. An apparatus in a second network, the apparatus comprising: a receiver configured to receive, as part of a call setup related signalling from a first network, an indication indicating a type of a network interface between the first network and the second network with respect to the call setup signalling, wherein the indication is received during set up of a communication session through the first network and the second network; and a processor configured to process the communication session based on the type of the network interface, wherein the network interface comprises an inter-IMS network to network interface (II-NNI), and wherein the indication of the type of network interface, indicates one of: call setup over interface from a visited network (V-PLMN A) of a calling user to a home network (H-PLMN A) of the calling user, call setup over interface from a home network (H-PLMN A) of a calling user to a visited network (V-PLMN A) of the calling user, with loopback, call setup over interface from a home network (H-PLMN A) of a calling user to a home network (H-PLMN B) of a called user, call setup over interface from a visited network (V-PLMN A) of a calling user to a home network (H-PLMN B) of a called user, call setup over interface from a home network (H-PLMN B) of a called user to a visited network (V-PLMN B) of the called user, call setup over interface from a session control node (S-CSCF A/AS A) controlling a calling user to a media resource function (MRF A), or setup over interface from a media resource function (MRF A) to a session control node (S-CSCF A/AS A).