A method for providing an alert notification to a user at a degraded location, being a location where LTE communication signals become degraded or lost, the method comprising: obtaining, by data processing hardware of a mobile terminal, incoming call data indicating the mobile terminal is unable to establish a first communication link with a communication terminal for receiving an incoming call using Voice over LTE; providing, by the data processing hardware, the alert notification to a user associated with the mobile terminal based on the obtained incoming call data, the alert notification informing the user that the incoming call directed toward the mobile terminal is pending, receiving, at the data processing hardware, the incoming call from the communication terminal after the mobile terminal moves away from the degraded location and establishes the first communication link with the communication terminal using Voice over LTE, wherein obtaining the incoming call data comprises: after the communication terminal transmits a paging signal at a first power level or a first effective isotropic radiated power to the mobile terminal that requests the mobile terminal to establish the first communication link: receiving, at the data processing hardware, an alerting signal including the incoming call data from the communication terminal through a network, wherein the communication terminal uses a high power spot beam to transmit the alerting signal at a second power level or a second effective isotropic radiated power greater than the first power level or the first effective isotropic radiated power of the paging signal, and the method further comprising, in response to receiving the alerting signal from the communication terminal: transmitting a connection request to the communication terminal to establish a second communication link with the communication terminal for receiving the incoming call; and receiving, at the data processing hardware, the incoming call from the communication terminal through the second communication link, the communication terminal using the high power spot beam to provide the incoming call through the second communication link. obtaining, by data processing hardware of a mobile terminal, incoming call data indicating the mobile terminal is unable to establish a first communication link with a communication terminal for receiving an incoming call using Voice over LTE; providing, by the data processing hardware, the alert notification to a user associated with the mobile terminal based on the obtained incoming call data, the alert notification informing the user that the incoming call directed toward the mobile terminal is pending, receiving, at the data processing hardware, the incoming call from the communication terminal after the mobile terminal moves away from the degraded location and establishes the first communication link with the communication terminal using Voice over LTE, wherein obtaining the incoming call data comprises: after the communication terminal transmits a paging signal at a first power level or a first effective isotropic radiated power to the mobile terminal that requests the mobile terminal to establish the first communication link: receiving, at the data processing hardware, an alerting signal including the incoming call data from the communication terminal through a network, wherein the communication terminal uses a high power spot beam to transmit the alerting signal at a second power level or a second effective isotropic radiated power greater than the first power level or the first effective isotropic radiated power of the paging signal, and the method further comprising, in response to receiving the alerting signal from the communication terminal: transmitting a connection request to the communication terminal to establish a second communication link with the communication terminal for receiving the incoming call; and receiving, at the data processing hardware, the incoming call from the communication terminal through the second communication link, the communication terminal using the high power spot beam to provide the incoming call through the second communication link. receiving, at the data processing hardware, an alerting signal including the incoming call data from the communication terminal through a network, wherein the communication terminal uses a high power spot beam to transmit the alerting signal at a second power level or a second effective isotropic radiated power greater than the first power level or the first effective isotropic radiated power of the paging signal, and the method further comprising, in response to receiving the alerting signal from the communication terminal: transmitting a connection request to the communication terminal to establish a second communication link with the communication terminal for receiving the incoming call; and receiving, at the data processing hardware, the incoming call from the communication terminal through the second communication link, the communication terminal using the high power spot beam to provide the incoming call through the second communication link. transmitting a connection request to the communication terminal to establish a second communication link with the communication terminal for receiving the incoming call; and receiving, at the data processing hardware, the incoming call from the communication terminal through the second communication link, the communication terminal using the high power spot beam to provide the incoming call through the second communication link.