Method and apparatus for establishing intra-network calls

A proxy location register, PLR, of a visited public land mobile network, V-PLMN, comprising at least one processor and memory configured to:

• store a first subscriber record of a first subscriber, served by a first call control node in the V-PLMN, wherein the first subscriber has a subscription to a home public land mobile network, H-PLMN, which is different to the V-PLMN, and wherein the first subscriber record comprises identification information of the first call control node;
• receive, from a gateway node of the V-PLMN, a request for routing information of the first call control node serving the first subscriber to establish an intra-network call between the first subscriber and a second subscriber served by a second call control node of the V-PLMN;
• responsive to receiving the request, access the stored first subscriber record to obtain the identification information of the first call control node;
• and
• communicate the routing information comprising the identification information of the first call control node to the gateway node to establish the intra-network call between the first subscriber and the second subscriber.