A method may include receiving a call, at a first mobile switching center (MSC) associated with a first network, wherein the call is intended for a subscriber of services associated with a second network. The method may also include sending a first location request message to a home location register (HLR) to request location information associated with a mobile device to which the call is directed, receiving, by the first MSC, an address associated with a service control point (SCP) and determining, by the SCP, that the second network is experiencing an outage or a problem. The method may further include determining, by the SCP, whether the mobile device is registered with the first network, and forwarding the call via the first network, in response to determining that the mobile device is registered with the first network.