Methods, systems and computer program products for integrating roaming control in a signaling message routing node

A system for providing roaming control in a signaling message routing node, the system comprising:

• a signaling message routing node separate from a home subscriber server (HSS), wherein the signaling message routing node comprises a serving call session control function (S-CSCF), the signaling message routing node including:
• (a) a communication module for sending and receiving signaling messages in a network, the communication module being adapted to receive a signaling message at the signaling message routing node in a network of a home service provider of a mobile subscriber, the signaling message being generated in response to a mobile subscriber registering in a foreign carrier's network;
• and
• (b) a roaming control module for receiving the signaling message from the interface module, and for:
• (i) determining whether the mobile subscriber is allowed, by the home service provider, to roam in the foreign carrier's network;
• (ii) in response to determining that the mobile subscriber is not allowed to roam in the foreign carrier's network, generating and sending a response to the signaling message indicating that the mobile subscriber is not allowed to roam in the foreign carrier's network, wherein generating and sending a response to the signaling message is performed instead of sending the signaling message to the HSS;
• and
• (iii) in response to determining that the mobile subscriber is allowed to roam in the foreign carrier's network, sending the signaling message to the HSS.