Cost effective call routing from IMS networks to local carrier networks

摘要

A call placed by a mobile device may be routed to landline destinations using cost-sensitive routing techniques. The call may be routed based on whether it is an intra-MTA (major trade area) or inter-MTA call. In one implementation, a device may receive message initiating a call and determine the MTA of the calling party based on a cell/sector identifier in the message. The device may further determine the MTA of the called party based on the called telephone number. The device may route the call based on whether the MTA of the calling party matches the MTA of the called party.