A customized alerting notification is provided to a user equipment (2) in a wireless communications network comprising a first radio access network (26) and a second radio access network (24). A first message (6, 18, 20) is received from the user equipment at a core network server (4, 16), of the first radio access network on attachment of the user equipment to the first radio access network, the message comprising an indication of a customized alerting notification capability of the user equipment in the second radio access network. In response to initiation of handover of the user equipment from the first radio access network to the second radio access network during an alerting phase of a call initiated from the user equipment using the first radio access network, a second message (12, 22) comprising the indication is sent from the core network server of the first radio access network to a mobility controller (10) coupled with the second radio access network. FIG. 3 to accompany the abstract.